all: migrate .proto files from testing-proto to interop-testing

and provide a simple protobuf service for test in testing-proto instead.

20 files changed, 1373 insertions, 13930 deletions

diff --git a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/MetricsServiceGrpc.java b/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/MetricsServiceGrpc.java
deleted file mode 100644
index dd6495e3a..000000000
--- a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/MetricsServiceGrpc.java
+++ /dev/null
@@ -1,305 +0,0 @@
-package io.grpc.testing.integration;
-
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-
-/**
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.6.0-SNAPSHOT)",
-    comments = "Source: io/grpc/testing/integration/metrics.proto")
-public final class MetricsServiceGrpc {
-
-  private MetricsServiceGrpc() {}
-
-  public static final String SERVICE_NAME = "grpc.testing.MetricsService";
-
-  // Static method descriptors that strictly reflect the proto.
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Metrics.EmptyMessage,
-      io.grpc.testing.integration.Metrics.GaugeResponse> METHOD_GET_ALL_GAUGES =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Metrics.EmptyMessage, io.grpc.testing.integration.Metrics.GaugeResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.SERVER_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.MetricsService", "GetAllGauges"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Metrics.EmptyMessage.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Metrics.GaugeResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Metrics.GaugeRequest,
-      io.grpc.testing.integration.Metrics.GaugeResponse> METHOD_GET_GAUGE =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Metrics.GaugeRequest, io.grpc.testing.integration.Metrics.GaugeResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.MetricsService", "GetGauge"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Metrics.GaugeRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Metrics.GaugeResponse.getDefaultInstance()))
-          .build();
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static MetricsServiceStub newStub(io.grpc.Channel channel) {
-    return new MetricsServiceStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static MetricsServiceBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new MetricsServiceBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static MetricsServiceFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new MetricsServiceFutureStub(channel);
-  }
-
-  /**
-   */
-  public static abstract class MetricsServiceImplBase implements io.grpc.BindableService {
-
-    /**
-     * <pre>
-     * Returns the values of all the gauges that are currently being maintained by
-     * the service
-     * </pre>
-     */
-    public void getAllGauges(io.grpc.testing.integration.Metrics.EmptyMessage request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Metrics.GaugeResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_GET_ALL_GAUGES, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * Returns the value of one gauge
-     * </pre>
-     */
-    public void getGauge(io.grpc.testing.integration.Metrics.GaugeRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Metrics.GaugeResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_GET_GAUGE, responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            METHOD_GET_ALL_GAUGES,
-            asyncServerStreamingCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Metrics.EmptyMessage,
-                io.grpc.testing.integration.Metrics.GaugeResponse>(
-                  this, METHODID_GET_ALL_GAUGES)))
-          .addMethod(
-            METHOD_GET_GAUGE,
-            asyncUnaryCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Metrics.GaugeRequest,
-                io.grpc.testing.integration.Metrics.GaugeResponse>(
-                  this, METHODID_GET_GAUGE)))
-          .build();
-    }
-  }
-
-  /**
-   */
-  public static final class MetricsServiceStub extends io.grpc.stub.AbstractStub<MetricsServiceStub> {
-    private MetricsServiceStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private MetricsServiceStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected MetricsServiceStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new MetricsServiceStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * Returns the values of all the gauges that are currently being maintained by
-     * the service
-     * </pre>
-     */
-    public void getAllGauges(io.grpc.testing.integration.Metrics.EmptyMessage request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Metrics.GaugeResponse> responseObserver) {
-      asyncServerStreamingCall(
-          getChannel().newCall(METHOD_GET_ALL_GAUGES, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * Returns the value of one gauge
-     * </pre>
-     */
-    public void getGauge(io.grpc.testing.integration.Metrics.GaugeRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Metrics.GaugeResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_GET_GAUGE, getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   */
-  public static final class MetricsServiceBlockingStub extends io.grpc.stub.AbstractStub<MetricsServiceBlockingStub> {
-    private MetricsServiceBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private MetricsServiceBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected MetricsServiceBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new MetricsServiceBlockingStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * Returns the values of all the gauges that are currently being maintained by
-     * the service
-     * </pre>
-     */
-    public java.util.Iterator<io.grpc.testing.integration.Metrics.GaugeResponse> getAllGauges(
-        io.grpc.testing.integration.Metrics.EmptyMessage request) {
-      return blockingServerStreamingCall(
-          getChannel(), METHOD_GET_ALL_GAUGES, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * Returns the value of one gauge
-     * </pre>
-     */
-    public io.grpc.testing.integration.Metrics.GaugeResponse getGauge(io.grpc.testing.integration.Metrics.GaugeRequest request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_GET_GAUGE, getCallOptions(), request);
-    }
-  }
-
-  /**
-   */
-  public static final class MetricsServiceFutureStub extends io.grpc.stub.AbstractStub<MetricsServiceFutureStub> {
-    private MetricsServiceFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private MetricsServiceFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected MetricsServiceFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new MetricsServiceFutureStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * Returns the value of one gauge
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<io.grpc.testing.integration.Metrics.GaugeResponse> getGauge(
-        io.grpc.testing.integration.Metrics.GaugeRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_GET_GAUGE, getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_GET_ALL_GAUGES = 0;
-  private static final int METHODID_GET_GAUGE = 1;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final MetricsServiceImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(MetricsServiceImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_GET_ALL_GAUGES:
-          serviceImpl.getAllGauges((io.grpc.testing.integration.Metrics.EmptyMessage) request,
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Metrics.GaugeResponse>) responseObserver);
-          break;
-        case METHODID_GET_GAUGE:
-          serviceImpl.getGauge((io.grpc.testing.integration.Metrics.GaugeRequest) request,
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Metrics.GaugeResponse>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static final class MetricsServiceDescriptorSupplier implements io.grpc.protobuf.ProtoFileDescriptorSupplier {
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return io.grpc.testing.integration.Metrics.getDescriptor();
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (MetricsServiceGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new MetricsServiceDescriptorSupplier())
-              .addMethod(METHOD_GET_ALL_GAUGES)
-              .addMethod(METHOD_GET_GAUGE)
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}
diff --git a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/ReconnectServiceGrpc.java b/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/ReconnectServiceGrpc.java
deleted file mode 100644
index f00799512..000000000
--- a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/ReconnectServiceGrpc.java
+++ /dev/null
@@ -1,303 +0,0 @@
-package io.grpc.testing.integration;
-
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-
-/**
- * <pre>
- * A service used to control reconnect server.
- * </pre>
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.6.0-SNAPSHOT)",
-    comments = "Source: io/grpc/testing/integration/test.proto")
-public final class ReconnectServiceGrpc {
-
-  private ReconnectServiceGrpc() {}
-
-  public static final String SERVICE_NAME = "grpc.testing.ReconnectService";
-
-  // Static method descriptors that strictly reflect the proto.
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<com.google.protobuf.EmptyProtos.Empty,
-      com.google.protobuf.EmptyProtos.Empty> METHOD_START =
-      io.grpc.MethodDescriptor.<com.google.protobuf.EmptyProtos.Empty, com.google.protobuf.EmptyProtos.Empty>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.ReconnectService", "Start"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<com.google.protobuf.EmptyProtos.Empty,
-      io.grpc.testing.integration.Messages.ReconnectInfo> METHOD_STOP =
-      io.grpc.MethodDescriptor.<com.google.protobuf.EmptyProtos.Empty, io.grpc.testing.integration.Messages.ReconnectInfo>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.ReconnectService", "Stop"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.ReconnectInfo.getDefaultInstance()))
-          .build();
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static ReconnectServiceStub newStub(io.grpc.Channel channel) {
-    return new ReconnectServiceStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static ReconnectServiceBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new ReconnectServiceBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static ReconnectServiceFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new ReconnectServiceFutureStub(channel);
-  }
-
-  /**
-   * <pre>
-   * A service used to control reconnect server.
-   * </pre>
-   */
-  public static abstract class ReconnectServiceImplBase implements io.grpc.BindableService {
-
-    /**
-     */
-    public void start(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_START, responseObserver);
-    }
-
-    /**
-     */
-    public void stop(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.ReconnectInfo> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_STOP, responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            METHOD_START,
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.EmptyProtos.Empty,
-                com.google.protobuf.EmptyProtos.Empty>(
-                  this, METHODID_START)))
-          .addMethod(
-            METHOD_STOP,
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.EmptyProtos.Empty,
-                io.grpc.testing.integration.Messages.ReconnectInfo>(
-                  this, METHODID_STOP)))
-          .build();
-    }
-  }
-
-  /**
-   * <pre>
-   * A service used to control reconnect server.
-   * </pre>
-   */
-  public static final class ReconnectServiceStub extends io.grpc.stub.AbstractStub<ReconnectServiceStub> {
-    private ReconnectServiceStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private ReconnectServiceStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected ReconnectServiceStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new ReconnectServiceStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public void start(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_START, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void stop(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.ReconnectInfo> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_STOP, getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   * <pre>
-   * A service used to control reconnect server.
-   * </pre>
-   */
-  public static final class ReconnectServiceBlockingStub extends io.grpc.stub.AbstractStub<ReconnectServiceBlockingStub> {
-    private ReconnectServiceBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private ReconnectServiceBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected ReconnectServiceBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new ReconnectServiceBlockingStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public com.google.protobuf.EmptyProtos.Empty start(com.google.protobuf.EmptyProtos.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_START, getCallOptions(), request);
-    }
-
-    /**
-     */
-    public io.grpc.testing.integration.Messages.ReconnectInfo stop(com.google.protobuf.EmptyProtos.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_STOP, getCallOptions(), request);
-    }
-  }
-
-  /**
-   * <pre>
-   * A service used to control reconnect server.
-   * </pre>
-   */
-  public static final class ReconnectServiceFutureStub extends io.grpc.stub.AbstractStub<ReconnectServiceFutureStub> {
-    private ReconnectServiceFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private ReconnectServiceFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected ReconnectServiceFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new ReconnectServiceFutureStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<com.google.protobuf.EmptyProtos.Empty> start(
-        com.google.protobuf.EmptyProtos.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_START, getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<io.grpc.testing.integration.Messages.ReconnectInfo> stop(
-        com.google.protobuf.EmptyProtos.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_STOP, getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_START = 0;
-  private static final int METHODID_STOP = 1;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final ReconnectServiceImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(ReconnectServiceImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_START:
-          serviceImpl.start((com.google.protobuf.EmptyProtos.Empty) request,
-              (io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty>) responseObserver);
-          break;
-        case METHODID_STOP:
-          serviceImpl.stop((com.google.protobuf.EmptyProtos.Empty) request,
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.ReconnectInfo>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static final class ReconnectServiceDescriptorSupplier implements io.grpc.protobuf.ProtoFileDescriptorSupplier {
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return io.grpc.testing.integration.Test.getDescriptor();
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (ReconnectServiceGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new ReconnectServiceDescriptorSupplier())
-              .addMethod(METHOD_START)
-              .addMethod(METHOD_STOP)
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}
diff --git a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/TestServiceGrpc.java b/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/TestServiceGrpc.java
deleted file mode 100644
index debb0ad9b..000000000
--- a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/TestServiceGrpc.java
+++ /dev/null
@@ -1,685 +0,0 @@
-package io.grpc.testing.integration;
-
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-
-/**
- * <pre>
- * A simple service to test the various types of RPCs and experiment with
- * performance with various types of payload.
- * </pre>
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.6.0-SNAPSHOT)",
-    comments = "Source: io/grpc/testing/integration/test.proto")
-public final class TestServiceGrpc {
-
-  private TestServiceGrpc() {}
-
-  public static final String SERVICE_NAME = "grpc.testing.TestService";
-
-  // Static method descriptors that strictly reflect the proto.
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<com.google.protobuf.EmptyProtos.Empty,
-      com.google.protobuf.EmptyProtos.Empty> METHOD_EMPTY_CALL =
-      io.grpc.MethodDescriptor.<com.google.protobuf.EmptyProtos.Empty, com.google.protobuf.EmptyProtos.Empty>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "EmptyCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Messages.SimpleRequest,
-      io.grpc.testing.integration.Messages.SimpleResponse> METHOD_UNARY_CALL =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Messages.SimpleRequest, io.grpc.testing.integration.Messages.SimpleResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "UnaryCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.SimpleRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.SimpleResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Messages.SimpleRequest,
-      io.grpc.testing.integration.Messages.SimpleResponse> METHOD_CACHEABLE_UNARY_CALL =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Messages.SimpleRequest, io.grpc.testing.integration.Messages.SimpleResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "CacheableUnaryCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.SimpleRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.SimpleResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Messages.StreamingOutputCallRequest,
-      io.grpc.testing.integration.Messages.StreamingOutputCallResponse> METHOD_STREAMING_OUTPUT_CALL =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Messages.StreamingOutputCallRequest, io.grpc.testing.integration.Messages.StreamingOutputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.SERVER_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "StreamingOutputCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingOutputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingOutputCallResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Messages.StreamingInputCallRequest,
-      io.grpc.testing.integration.Messages.StreamingInputCallResponse> METHOD_STREAMING_INPUT_CALL =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Messages.StreamingInputCallRequest, io.grpc.testing.integration.Messages.StreamingInputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.CLIENT_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "StreamingInputCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingInputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingInputCallResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Messages.StreamingOutputCallRequest,
-      io.grpc.testing.integration.Messages.StreamingOutputCallResponse> METHOD_FULL_DUPLEX_CALL =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Messages.StreamingOutputCallRequest, io.grpc.testing.integration.Messages.StreamingOutputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "FullDuplexCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingOutputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingOutputCallResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<io.grpc.testing.integration.Messages.StreamingOutputCallRequest,
-      io.grpc.testing.integration.Messages.StreamingOutputCallResponse> METHOD_HALF_DUPLEX_CALL =
-      io.grpc.MethodDescriptor.<io.grpc.testing.integration.Messages.StreamingOutputCallRequest, io.grpc.testing.integration.Messages.StreamingOutputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "HalfDuplexCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingOutputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              io.grpc.testing.integration.Messages.StreamingOutputCallResponse.getDefaultInstance()))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<com.google.protobuf.EmptyProtos.Empty,
-      com.google.protobuf.EmptyProtos.Empty> METHOD_UNIMPLEMENTED_CALL =
-      io.grpc.MethodDescriptor.<com.google.protobuf.EmptyProtos.Empty, com.google.protobuf.EmptyProtos.Empty>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "UnimplementedCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .build();
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static TestServiceStub newStub(io.grpc.Channel channel) {
-    return new TestServiceStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static TestServiceBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new TestServiceBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static TestServiceFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new TestServiceFutureStub(channel);
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static abstract class TestServiceImplBase implements io.grpc.BindableService {
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public void emptyCall(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_EMPTY_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public void unaryCall(io.grpc.testing.integration.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.SimpleResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_UNARY_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public void cacheableUnaryCall(io.grpc.testing.integration.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.SimpleResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_CACHEABLE_UNARY_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by a sequence of responses (streamed download).
-     * The server returns the payload with client desired type and sizes.
-     * </pre>
-     */
-    public void streamingOutputCall(io.grpc.testing.integration.Messages.StreamingOutputCallRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_STREAMING_OUTPUT_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by one response (streamed upload).
-     * The server returns the aggregated size of client payload as the result.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingInputCallRequest> streamingInputCall(
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingInputCallResponse> responseObserver) {
-      return asyncUnimplementedStreamingCall(METHOD_STREAMING_INPUT_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests with each request served by the server immediately.
-     * As one request could lead to multiple responses, this interface
-     * demonstrates the idea of full duplexing.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallRequest> fullDuplexCall(
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncUnimplementedStreamingCall(METHOD_FULL_DUPLEX_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by a sequence of responses.
-     * The server buffers all the client requests and then serves them in order. A
-     * stream of responses are returned to the client when the server starts with
-     * first request.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallRequest> halfDuplexCall(
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncUnimplementedStreamingCall(METHOD_HALF_DUPLEX_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public void unimplementedCall(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_UNIMPLEMENTED_CALL, responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            METHOD_EMPTY_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.EmptyProtos.Empty,
-                com.google.protobuf.EmptyProtos.Empty>(
-                  this, METHODID_EMPTY_CALL)))
-          .addMethod(
-            METHOD_UNARY_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Messages.SimpleRequest,
-                io.grpc.testing.integration.Messages.SimpleResponse>(
-                  this, METHODID_UNARY_CALL)))
-          .addMethod(
-            METHOD_CACHEABLE_UNARY_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Messages.SimpleRequest,
-                io.grpc.testing.integration.Messages.SimpleResponse>(
-                  this, METHODID_CACHEABLE_UNARY_CALL)))
-          .addMethod(
-            METHOD_STREAMING_OUTPUT_CALL,
-            asyncServerStreamingCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Messages.StreamingOutputCallRequest,
-                io.grpc.testing.integration.Messages.StreamingOutputCallResponse>(
-                  this, METHODID_STREAMING_OUTPUT_CALL)))
-          .addMethod(
-            METHOD_STREAMING_INPUT_CALL,
-            asyncClientStreamingCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Messages.StreamingInputCallRequest,
-                io.grpc.testing.integration.Messages.StreamingInputCallResponse>(
-                  this, METHODID_STREAMING_INPUT_CALL)))
-          .addMethod(
-            METHOD_FULL_DUPLEX_CALL,
-            asyncBidiStreamingCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Messages.StreamingOutputCallRequest,
-                io.grpc.testing.integration.Messages.StreamingOutputCallResponse>(
-                  this, METHODID_FULL_DUPLEX_CALL)))
-          .addMethod(
-            METHOD_HALF_DUPLEX_CALL,
-            asyncBidiStreamingCall(
-              new MethodHandlers<
-                io.grpc.testing.integration.Messages.StreamingOutputCallRequest,
-                io.grpc.testing.integration.Messages.StreamingOutputCallResponse>(
-                  this, METHODID_HALF_DUPLEX_CALL)))
-          .addMethod(
-            METHOD_UNIMPLEMENTED_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.EmptyProtos.Empty,
-                com.google.protobuf.EmptyProtos.Empty>(
-                  this, METHODID_UNIMPLEMENTED_CALL)))
-          .build();
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static final class TestServiceStub extends io.grpc.stub.AbstractStub<TestServiceStub> {
-    private TestServiceStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TestServiceStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TestServiceStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TestServiceStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public void emptyCall(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_EMPTY_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public void unaryCall(io.grpc.testing.integration.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.SimpleResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_UNARY_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public void cacheableUnaryCall(io.grpc.testing.integration.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.SimpleResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_CACHEABLE_UNARY_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by a sequence of responses (streamed download).
-     * The server returns the payload with client desired type and sizes.
-     * </pre>
-     */
-    public void streamingOutputCall(io.grpc.testing.integration.Messages.StreamingOutputCallRequest request,
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> responseObserver) {
-      asyncServerStreamingCall(
-          getChannel().newCall(METHOD_STREAMING_OUTPUT_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by one response (streamed upload).
-     * The server returns the aggregated size of client payload as the result.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingInputCallRequest> streamingInputCall(
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingInputCallResponse> responseObserver) {
-      return asyncClientStreamingCall(
-          getChannel().newCall(METHOD_STREAMING_INPUT_CALL, getCallOptions()), responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests with each request served by the server immediately.
-     * As one request could lead to multiple responses, this interface
-     * demonstrates the idea of full duplexing.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallRequest> fullDuplexCall(
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncBidiStreamingCall(
-          getChannel().newCall(METHOD_FULL_DUPLEX_CALL, getCallOptions()), responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by a sequence of responses.
-     * The server buffers all the client requests and then serves them in order. A
-     * stream of responses are returned to the client when the server starts with
-     * first request.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallRequest> halfDuplexCall(
-        io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncBidiStreamingCall(
-          getChannel().newCall(METHOD_HALF_DUPLEX_CALL, getCallOptions()), responseObserver);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public void unimplementedCall(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_UNIMPLEMENTED_CALL, getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static final class TestServiceBlockingStub extends io.grpc.stub.AbstractStub<TestServiceBlockingStub> {
-    private TestServiceBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TestServiceBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TestServiceBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TestServiceBlockingStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public com.google.protobuf.EmptyProtos.Empty emptyCall(com.google.protobuf.EmptyProtos.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_EMPTY_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public io.grpc.testing.integration.Messages.SimpleResponse unaryCall(io.grpc.testing.integration.Messages.SimpleRequest request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_UNARY_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public io.grpc.testing.integration.Messages.SimpleResponse cacheableUnaryCall(io.grpc.testing.integration.Messages.SimpleRequest request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_CACHEABLE_UNARY_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by a sequence of responses (streamed download).
-     * The server returns the payload with client desired type and sizes.
-     * </pre>
-     */
-    public java.util.Iterator<io.grpc.testing.integration.Messages.StreamingOutputCallResponse> streamingOutputCall(
-        io.grpc.testing.integration.Messages.StreamingOutputCallRequest request) {
-      return blockingServerStreamingCall(
-          getChannel(), METHOD_STREAMING_OUTPUT_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public com.google.protobuf.EmptyProtos.Empty unimplementedCall(com.google.protobuf.EmptyProtos.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_UNIMPLEMENTED_CALL, getCallOptions(), request);
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static final class TestServiceFutureStub extends io.grpc.stub.AbstractStub<TestServiceFutureStub> {
-    private TestServiceFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TestServiceFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TestServiceFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TestServiceFutureStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<com.google.protobuf.EmptyProtos.Empty> emptyCall(
-        com.google.protobuf.EmptyProtos.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_EMPTY_CALL, getCallOptions()), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<io.grpc.testing.integration.Messages.SimpleResponse> unaryCall(
-        io.grpc.testing.integration.Messages.SimpleRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_UNARY_CALL, getCallOptions()), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<io.grpc.testing.integration.Messages.SimpleResponse> cacheableUnaryCall(
-        io.grpc.testing.integration.Messages.SimpleRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_CACHEABLE_UNARY_CALL, getCallOptions()), request);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<com.google.protobuf.EmptyProtos.Empty> unimplementedCall(
-        com.google.protobuf.EmptyProtos.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_UNIMPLEMENTED_CALL, getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_EMPTY_CALL = 0;
-  private static final int METHODID_UNARY_CALL = 1;
-  private static final int METHODID_CACHEABLE_UNARY_CALL = 2;
-  private static final int METHODID_STREAMING_OUTPUT_CALL = 3;
-  private static final int METHODID_UNIMPLEMENTED_CALL = 4;
-  private static final int METHODID_STREAMING_INPUT_CALL = 5;
-  private static final int METHODID_FULL_DUPLEX_CALL = 6;
-  private static final int METHODID_HALF_DUPLEX_CALL = 7;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final TestServiceImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(TestServiceImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_EMPTY_CALL:
-          serviceImpl.emptyCall((com.google.protobuf.EmptyProtos.Empty) request,
-              (io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty>) responseObserver);
-          break;
-        case METHODID_UNARY_CALL:
-          serviceImpl.unaryCall((io.grpc.testing.integration.Messages.SimpleRequest) request,
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.SimpleResponse>) responseObserver);
-          break;
-        case METHODID_CACHEABLE_UNARY_CALL:
-          serviceImpl.cacheableUnaryCall((io.grpc.testing.integration.Messages.SimpleRequest) request,
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.SimpleResponse>) responseObserver);
-          break;
-        case METHODID_STREAMING_OUTPUT_CALL:
-          serviceImpl.streamingOutputCall((io.grpc.testing.integration.Messages.StreamingOutputCallRequest) request,
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse>) responseObserver);
-          break;
-        case METHODID_UNIMPLEMENTED_CALL:
-          serviceImpl.unimplementedCall((com.google.protobuf.EmptyProtos.Empty) request,
-              (io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_STREAMING_INPUT_CALL:
-          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.streamingInputCall(
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingInputCallResponse>) responseObserver);
-        case METHODID_FULL_DUPLEX_CALL:
-          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.fullDuplexCall(
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse>) responseObserver);
-        case METHODID_HALF_DUPLEX_CALL:
-          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.halfDuplexCall(
-              (io.grpc.stub.StreamObserver<io.grpc.testing.integration.Messages.StreamingOutputCallResponse>) responseObserver);
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static final class TestServiceDescriptorSupplier implements io.grpc.protobuf.ProtoFileDescriptorSupplier {
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return io.grpc.testing.integration.Test.getDescriptor();
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (TestServiceGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new TestServiceDescriptorSupplier())
-              .addMethod(METHOD_EMPTY_CALL)
-              .addMethod(METHOD_UNARY_CALL)
-              .addMethod(METHOD_CACHEABLE_UNARY_CALL)
-              .addMethod(METHOD_STREAMING_OUTPUT_CALL)
-              .addMethod(METHOD_STREAMING_INPUT_CALL)
-              .addMethod(METHOD_FULL_DUPLEX_CALL)
-              .addMethod(METHOD_HALF_DUPLEX_CALL)
-              .addMethod(METHOD_UNIMPLEMENTED_CALL)
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}
diff --git a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/UnimplementedServiceGrpc.java b/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/UnimplementedServiceGrpc.java
deleted file mode 100644
index 6740ce4b1..000000000
--- a/testing-proto/src/generated/main/grpc/io/grpc/testing/integration/UnimplementedServiceGrpc.java
+++ /dev/null
@@ -1,265 +0,0 @@
-package io.grpc.testing.integration;
-
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-
-/**
- * <pre>
- * A simple service NOT implemented at servers so clients can test for
- * that case.
- * </pre>
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.6.0-SNAPSHOT)",
-    comments = "Source: io/grpc/testing/integration/test.proto")
-public final class UnimplementedServiceGrpc {
-
-  private UnimplementedServiceGrpc() {}
-
-  public static final String SERVICE_NAME = "grpc.testing.UnimplementedService";
-
-  // Static method descriptors that strictly reflect the proto.
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<com.google.protobuf.EmptyProtos.Empty,
-      com.google.protobuf.EmptyProtos.Empty> METHOD_UNIMPLEMENTED_CALL =
-      io.grpc.MethodDescriptor.<com.google.protobuf.EmptyProtos.Empty, com.google.protobuf.EmptyProtos.Empty>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.UnimplementedService", "UnimplementedCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              com.google.protobuf.EmptyProtos.Empty.getDefaultInstance()))
-          .build();
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static UnimplementedServiceStub newStub(io.grpc.Channel channel) {
-    return new UnimplementedServiceStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static UnimplementedServiceBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new UnimplementedServiceBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static UnimplementedServiceFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new UnimplementedServiceFutureStub(channel);
-  }
-
-  /**
-   * <pre>
-   * A simple service NOT implemented at servers so clients can test for
-   * that case.
-   * </pre>
-   */
-  public static abstract class UnimplementedServiceImplBase implements io.grpc.BindableService {
-
-    /**
-     * <pre>
-     * A call that no server should implement
-     * </pre>
-     */
-    public void unimplementedCall(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_UNIMPLEMENTED_CALL, responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            METHOD_UNIMPLEMENTED_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.EmptyProtos.Empty,
-                com.google.protobuf.EmptyProtos.Empty>(
-                  this, METHODID_UNIMPLEMENTED_CALL)))
-          .build();
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service NOT implemented at servers so clients can test for
-   * that case.
-   * </pre>
-   */
-  public static final class UnimplementedServiceStub extends io.grpc.stub.AbstractStub<UnimplementedServiceStub> {
-    private UnimplementedServiceStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private UnimplementedServiceStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected UnimplementedServiceStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new UnimplementedServiceStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * A call that no server should implement
-     * </pre>
-     */
-    public void unimplementedCall(com.google.protobuf.EmptyProtos.Empty request,
-        io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_UNIMPLEMENTED_CALL, getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service NOT implemented at servers so clients can test for
-   * that case.
-   * </pre>
-   */
-  public static final class UnimplementedServiceBlockingStub extends io.grpc.stub.AbstractStub<UnimplementedServiceBlockingStub> {
-    private UnimplementedServiceBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private UnimplementedServiceBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected UnimplementedServiceBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new UnimplementedServiceBlockingStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * A call that no server should implement
-     * </pre>
-     */
-    public com.google.protobuf.EmptyProtos.Empty unimplementedCall(com.google.protobuf.EmptyProtos.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_UNIMPLEMENTED_CALL, getCallOptions(), request);
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service NOT implemented at servers so clients can test for
-   * that case.
-   * </pre>
-   */
-  public static final class UnimplementedServiceFutureStub extends io.grpc.stub.AbstractStub<UnimplementedServiceFutureStub> {
-    private UnimplementedServiceFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private UnimplementedServiceFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected UnimplementedServiceFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new UnimplementedServiceFutureStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * A call that no server should implement
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<com.google.protobuf.EmptyProtos.Empty> unimplementedCall(
-        com.google.protobuf.EmptyProtos.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_UNIMPLEMENTED_CALL, getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_UNIMPLEMENTED_CALL = 0;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final UnimplementedServiceImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(UnimplementedServiceImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_UNIMPLEMENTED_CALL:
-          serviceImpl.unimplementedCall((com.google.protobuf.EmptyProtos.Empty) request,
-              (io.grpc.stub.StreamObserver<com.google.protobuf.EmptyProtos.Empty>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static final class UnimplementedServiceDescriptorSupplier implements io.grpc.protobuf.ProtoFileDescriptorSupplier {
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return io.grpc.testing.integration.Test.getDescriptor();
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (UnimplementedServiceGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new UnimplementedServiceDescriptorSupplier())
-              .addMethod(METHOD_UNIMPLEMENTED_CALL)
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}
diff --git a/testing-proto/src/generated/main/grpc/io/grpc/testing/protobuf/SimpleServiceGrpc.java b/testing-proto/src/generated/main/grpc/io/grpc/testing/protobuf/SimpleServiceGrpc.java
new file mode 100644
index 000000000..a18995361
--- /dev/null
+++ b/testing-proto/src/generated/main/grpc/io/grpc/testing/protobuf/SimpleServiceGrpc.java
@@ -0,0 +1,407 @@
+package io.grpc.testing.protobuf;
+
+import static io.grpc.stub.ClientCalls.asyncUnaryCall;
+import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ClientCalls.blockingUnaryCall;
+import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
+import static io.grpc.stub.ClientCalls.futureUnaryCall;
+import static io.grpc.MethodDescriptor.generateFullMethodName;
+import static io.grpc.stub.ServerCalls.asyncUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
+
+/**
+ * <pre>
+ * A simple service for test.
+ * </pre>
+ */
+@javax.annotation.Generated(
+    value = "by gRPC proto compiler (version 1.6.0-SNAPSHOT)",
+    comments = "Source: io/grpc/testing/protobuf/simpleservice.proto")
+public final class SimpleServiceGrpc {
+
+  private SimpleServiceGrpc() {}
+
+  public static final String SERVICE_NAME = "grpc.testing.SimpleService";
+
+  // Static method descriptors that strictly reflect the proto.
+  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
+  public static final io.grpc.MethodDescriptor<io.grpc.testing.protobuf.SimpleRequest,
+      io.grpc.testing.protobuf.SimpleResponse> METHOD_UNARY_RPC =
+      io.grpc.MethodDescriptor.<io.grpc.testing.protobuf.SimpleRequest, io.grpc.testing.protobuf.SimpleResponse>newBuilder()
+          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName(generateFullMethodName(
+              "grpc.testing.SimpleService", "UnaryRpc"))
+          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleRequest.getDefaultInstance()))
+          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleResponse.getDefaultInstance()))
+          .build();
+  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
+  public static final io.grpc.MethodDescriptor<io.grpc.testing.protobuf.SimpleRequest,
+      io.grpc.testing.protobuf.SimpleResponse> METHOD_CLIENT_STREAMING_RPC =
+      io.grpc.MethodDescriptor.<io.grpc.testing.protobuf.SimpleRequest, io.grpc.testing.protobuf.SimpleResponse>newBuilder()
+          .setType(io.grpc.MethodDescriptor.MethodType.CLIENT_STREAMING)
+          .setFullMethodName(generateFullMethodName(
+              "grpc.testing.SimpleService", "ClientStreamingRpc"))
+          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleRequest.getDefaultInstance()))
+          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleResponse.getDefaultInstance()))
+          .build();
+  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
+  public static final io.grpc.MethodDescriptor<io.grpc.testing.protobuf.SimpleRequest,
+      io.grpc.testing.protobuf.SimpleResponse> METHOD_SERVER_STREAMING_RPC =
+      io.grpc.MethodDescriptor.<io.grpc.testing.protobuf.SimpleRequest, io.grpc.testing.protobuf.SimpleResponse>newBuilder()
+          .setType(io.grpc.MethodDescriptor.MethodType.SERVER_STREAMING)
+          .setFullMethodName(generateFullMethodName(
+              "grpc.testing.SimpleService", "ServerStreamingRpc"))
+          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleRequest.getDefaultInstance()))
+          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleResponse.getDefaultInstance()))
+          .build();
+  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
+  public static final io.grpc.MethodDescriptor<io.grpc.testing.protobuf.SimpleRequest,
+      io.grpc.testing.protobuf.SimpleResponse> METHOD_BIDI_STREAMING_RPC =
+      io.grpc.MethodDescriptor.<io.grpc.testing.protobuf.SimpleRequest, io.grpc.testing.protobuf.SimpleResponse>newBuilder()
+          .setType(io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
+          .setFullMethodName(generateFullMethodName(
+              "grpc.testing.SimpleService", "BidiStreamingRpc"))
+          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleRequest.getDefaultInstance()))
+          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+              io.grpc.testing.protobuf.SimpleResponse.getDefaultInstance()))
+          .build();
+
+  /**
+   * Creates a new async stub that supports all call types for the service
+   */
+  public static SimpleServiceStub newStub(io.grpc.Channel channel) {
+    return new SimpleServiceStub(channel);
+  }
+
+  /**
+   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
+   */
+  public static SimpleServiceBlockingStub newBlockingStub(
+      io.grpc.Channel channel) {
+    return new SimpleServiceBlockingStub(channel);
+  }
+
+  /**
+   * Creates a new ListenableFuture-style stub that supports unary calls on the service
+   */
+  public static SimpleServiceFutureStub newFutureStub(
+      io.grpc.Channel channel) {
+    return new SimpleServiceFutureStub(channel);
+  }
+
+  /**
+   * <pre>
+   * A simple service for test.
+   * </pre>
+   */
+  public static abstract class SimpleServiceImplBase implements io.grpc.BindableService {
+
+    /**
+     * <pre>
+     * Simple unary RPC.
+     * </pre>
+     */
+    public void unaryRpc(io.grpc.testing.protobuf.SimpleRequest request,
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(METHOD_UNARY_RPC, responseObserver);
+    }
+
+    /**
+     * <pre>
+     * Simple client-to-server streaming RPC.
+     * </pre>
+     */
+    public io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleRequest> clientStreamingRpc(
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      return asyncUnimplementedStreamingCall(METHOD_CLIENT_STREAMING_RPC, responseObserver);
+    }
+
+    /**
+     * <pre>
+     * Simple server-to-client streaming RPC.
+     * </pre>
+     */
+    public void serverStreamingRpc(io.grpc.testing.protobuf.SimpleRequest request,
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(METHOD_SERVER_STREAMING_RPC, responseObserver);
+    }
+
+    /**
+     * <pre>
+     * Simple bidirectional streaming RPC.
+     * </pre>
+     */
+    public io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleRequest> bidiStreamingRpc(
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      return asyncUnimplementedStreamingCall(METHOD_BIDI_STREAMING_RPC, responseObserver);
+    }
+
+    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
+      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
+          .addMethod(
+            METHOD_UNARY_RPC,
+            asyncUnaryCall(
+              new MethodHandlers<
+                io.grpc.testing.protobuf.SimpleRequest,
+                io.grpc.testing.protobuf.SimpleResponse>(
+                  this, METHODID_UNARY_RPC)))
+          .addMethod(
+            METHOD_CLIENT_STREAMING_RPC,
+            asyncClientStreamingCall(
+              new MethodHandlers<
+                io.grpc.testing.protobuf.SimpleRequest,
+                io.grpc.testing.protobuf.SimpleResponse>(
+                  this, METHODID_CLIENT_STREAMING_RPC)))
+          .addMethod(
+            METHOD_SERVER_STREAMING_RPC,
+            asyncServerStreamingCall(
+              new MethodHandlers<
+                io.grpc.testing.protobuf.SimpleRequest,
+                io.grpc.testing.protobuf.SimpleResponse>(
+                  this, METHODID_SERVER_STREAMING_RPC)))
+          .addMethod(
+            METHOD_BIDI_STREAMING_RPC,
+            asyncBidiStreamingCall(
+              new MethodHandlers<
+                io.grpc.testing.protobuf.SimpleRequest,
+                io.grpc.testing.protobuf.SimpleResponse>(
+                  this, METHODID_BIDI_STREAMING_RPC)))
+          .build();
+    }
+  }
+
+  /**
+   * <pre>
+   * A simple service for test.
+   * </pre>
+   */
+  public static final class SimpleServiceStub extends io.grpc.stub.AbstractStub<SimpleServiceStub> {
+    private SimpleServiceStub(io.grpc.Channel channel) {
+      super(channel);
+    }
+
+    private SimpleServiceStub(io.grpc.Channel channel,
+        io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected SimpleServiceStub build(io.grpc.Channel channel,
+        io.grpc.CallOptions callOptions) {
+      return new SimpleServiceStub(channel, callOptions);
+    }
+
+    /**
+     * <pre>
+     * Simple unary RPC.
+     * </pre>
+     */
+    public void unaryRpc(io.grpc.testing.protobuf.SimpleRequest request,
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(METHOD_UNARY_RPC, getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     * <pre>
+     * Simple client-to-server streaming RPC.
+     * </pre>
+     */
+    public io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleRequest> clientStreamingRpc(
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      return asyncClientStreamingCall(
+          getChannel().newCall(METHOD_CLIENT_STREAMING_RPC, getCallOptions()), responseObserver);
+    }
+
+    /**
+     * <pre>
+     * Simple server-to-client streaming RPC.
+     * </pre>
+     */
+    public void serverStreamingRpc(io.grpc.testing.protobuf.SimpleRequest request,
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      asyncServerStreamingCall(
+          getChannel().newCall(METHOD_SERVER_STREAMING_RPC, getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     * <pre>
+     * Simple bidirectional streaming RPC.
+     * </pre>
+     */
+    public io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleRequest> bidiStreamingRpc(
+        io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse> responseObserver) {
+      return asyncBidiStreamingCall(
+          getChannel().newCall(METHOD_BIDI_STREAMING_RPC, getCallOptions()), responseObserver);
+    }
+  }
+
+  /**
+   * <pre>
+   * A simple service for test.
+   * </pre>
+   */
+  public static final class SimpleServiceBlockingStub extends io.grpc.stub.AbstractStub<SimpleServiceBlockingStub> {
+    private SimpleServiceBlockingStub(io.grpc.Channel channel) {
+      super(channel);
+    }
+
+    private SimpleServiceBlockingStub(io.grpc.Channel channel,
+        io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected SimpleServiceBlockingStub build(io.grpc.Channel channel,
+        io.grpc.CallOptions callOptions) {
+      return new SimpleServiceBlockingStub(channel, callOptions);
+    }
+
+    /**
+     * <pre>
+     * Simple unary RPC.
+     * </pre>
+     */
+    public io.grpc.testing.protobuf.SimpleResponse unaryRpc(io.grpc.testing.protobuf.SimpleRequest request) {
+      return blockingUnaryCall(
+          getChannel(), METHOD_UNARY_RPC, getCallOptions(), request);
+    }
+
+    /**
+     * <pre>
+     * Simple server-to-client streaming RPC.
+     * </pre>
+     */
+    public java.util.Iterator<io.grpc.testing.protobuf.SimpleResponse> serverStreamingRpc(
+        io.grpc.testing.protobuf.SimpleRequest request) {
+      return blockingServerStreamingCall(
+          getChannel(), METHOD_SERVER_STREAMING_RPC, getCallOptions(), request);
+    }
+  }
+
+  /**
+   * <pre>
+   * A simple service for test.
+   * </pre>
+   */
+  public static final class SimpleServiceFutureStub extends io.grpc.stub.AbstractStub<SimpleServiceFutureStub> {
+    private SimpleServiceFutureStub(io.grpc.Channel channel) {
+      super(channel);
+    }
+
+    private SimpleServiceFutureStub(io.grpc.Channel channel,
+        io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected SimpleServiceFutureStub build(io.grpc.Channel channel,
+        io.grpc.CallOptions callOptions) {
+      return new SimpleServiceFutureStub(channel, callOptions);
+    }
+
+    /**
+     * <pre>
+     * Simple unary RPC.
+     * </pre>
+     */
+    public com.google.common.util.concurrent.ListenableFuture<io.grpc.testing.protobuf.SimpleResponse> unaryRpc(
+        io.grpc.testing.protobuf.SimpleRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(METHOD_UNARY_RPC, getCallOptions()), request);
+    }
+  }
+
+  private static final int METHODID_UNARY_RPC = 0;
+  private static final int METHODID_SERVER_STREAMING_RPC = 1;
+  private static final int METHODID_CLIENT_STREAMING_RPC = 2;
+  private static final int METHODID_BIDI_STREAMING_RPC = 3;
+
+  private static final class MethodHandlers<Req, Resp> implements
+      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
+    private final SimpleServiceImplBase serviceImpl;
+    private final int methodId;
+
+    MethodHandlers(SimpleServiceImplBase serviceImpl, int methodId) {
+      this.serviceImpl = serviceImpl;
+      this.methodId = methodId;
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        case METHODID_UNARY_RPC:
+          serviceImpl.unaryRpc((io.grpc.testing.protobuf.SimpleRequest) request,
+              (io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse>) responseObserver);
+          break;
+        case METHODID_SERVER_STREAMING_RPC:
+          serviceImpl.serverStreamingRpc((io.grpc.testing.protobuf.SimpleRequest) request,
+              (io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse>) responseObserver);
+          break;
+        default:
+          throw new AssertionError();
+      }
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public io.grpc.stub.StreamObserver<Req> invoke(
+        io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        case METHODID_CLIENT_STREAMING_RPC:
+          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.clientStreamingRpc(
+              (io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse>) responseObserver);
+        case METHODID_BIDI_STREAMING_RPC:
+          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.bidiStreamingRpc(
+              (io.grpc.stub.StreamObserver<io.grpc.testing.protobuf.SimpleResponse>) responseObserver);
+        default:
+          throw new AssertionError();
+      }
+    }
+  }
+
+  private static final class SimpleServiceDescriptorSupplier implements io.grpc.protobuf.ProtoFileDescriptorSupplier {
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
+      return io.grpc.testing.protobuf.SimpleServiceProto.getDescriptor();
+    }
+  }
+
+  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
+
+  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
+    io.grpc.ServiceDescriptor result = serviceDescriptor;
+    if (result == null) {
+      synchronized (SimpleServiceGrpc.class) {
+        result = serviceDescriptor;
+        if (result == null) {
+          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
+              .setSchemaDescriptor(new SimpleServiceDescriptorSupplier())
+              .addMethod(METHOD_UNARY_RPC)
+              .addMethod(METHOD_CLIENT_STREAMING_RPC)
+              .addMethod(METHOD_SERVER_STREAMING_RPC)
+              .addMethod(METHOD_BIDI_STREAMING_RPC)
+              .build();
+        }
+      }
+    }
+    return result;
+  }
+}
diff --git a/testing-proto/src/generated/main/java/com/google/protobuf/EmptyProtos.java b/testing-proto/src/generated/main/java/com/google/protobuf/EmptyProtos.java
deleted file mode 100644
index b5cdcab56..000000000
--- a/testing-proto/src/generated/main/java/com/google/protobuf/EmptyProtos.java
+++ /dev/null
@@ -1,458 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: io/grpc/testing/integration/empty.proto
-
-package com.google.protobuf;
-
-public final class EmptyProtos {
-  private EmptyProtos() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  public interface EmptyOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.Empty)
-      com.google.protobuf.MessageOrBuilder {
-  }
-  /**
-   * <pre>
-   * An empty message that you can re-use to avoid defining duplicated empty
-   * messages in your project. A typical example is to use it as argument or the
-   * return value of a service API. For instance:
-   *   service Foo {
-   *     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
-   *   };
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.Empty}
-   */
-  public  static final class Empty extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.Empty)
-      EmptyOrBuilder {
-    // Use Empty.newBuilder() to construct.
-    private Empty(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private Empty() {
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private Empty(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
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-                done = true;
-              }
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return com.google.protobuf.EmptyProtos.internal_static_grpc_testing_Empty_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
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-
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-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
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-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
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-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    private static final long serialVersionUID = 0L;
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof com.google.protobuf.EmptyProtos.Empty)) {
-        return super.equals(obj);
-      }
-      com.google.protobuf.EmptyProtos.Empty other = (com.google.protobuf.EmptyProtos.Empty) obj;
-
-      boolean result = true;
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
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-
-    public static com.google.protobuf.EmptyProtos.Empty parseFrom(
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-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static com.google.protobuf.EmptyProtos.Empty parseFrom(
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-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
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-     * messages in your project. A typical example is to use it as argument or the
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-     *   service Foo {
-     *     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
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diff --git a/testing-proto/src/generated/main/java/io/grpc/testing/integration/Messages.java b/testing-proto/src/generated/main/java/io/grpc/testing/integration/Messages.java
deleted file mode 100644
index 1949c1cfa..000000000
--- a/testing-proto/src/generated/main/java/io/grpc/testing/integration/Messages.java
+++ /dev/null
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-      }
-      /**
-       * <code>string message = 2;</code>
-       */
-      public Builder setMessageBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        message_ = value;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.EchoStatus)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.EchoStatus)
-    private static final io.grpc.testing.integration.Messages.EchoStatus DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new io.grpc.testing.integration.Messages.EchoStatus();
-    }
-
-    public static io.grpc.testing.integration.Messages.EchoStatus getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<EchoStatus>
-        PARSER = new com.google.protobuf.AbstractParser<EchoStatus>() {
-      public EchoStatus parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new EchoStatus(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<EchoStatus> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<EchoStatus> getParserForType() {
-      return PARSER;
-    }
-
-    public io.grpc.testing.integration.Messages.EchoStatus getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface SimpleRequestOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.SimpleRequest)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    int getResponseTypeValue();
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    io.grpc.testing.integration.Messages.PayloadType getResponseType();
-
-    /**
-     * <pre>
-     * Desired payload size in the response from the server.
-     * If response_type is COMPRESSABLE, this denotes the size before compression.
-     * </pre>
-     *
-     * <code>int32 response_size = 2;</code>
-     */
-    int getResponseSize();
-
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    io.grpc.testing.integration.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder();
-
-    /**
-     * <pre>
-     * Whether SimpleResponse should include username.
-     * </pre>
-     *
-     * <code>bool fill_username = 4;</code>
-     */
-    boolean getFillUsername();
-
-    /**
-     * <pre>
-     * Whether SimpleResponse should include OAuth scope.
-     * </pre>
-     *
-     * <code>bool fill_oauth_scope = 5;</code>
-     */
-    boolean getFillOauthScope();
-
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    int getResponseCompressionValue();
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    io.grpc.testing.integration.Messages.CompressionType getResponseCompression();
-
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    boolean hasResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    io.grpc.testing.integration.Messages.EchoStatus getResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    io.grpc.testing.integration.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder();
-  }
-  /**
-   * <pre>
-   * Unary request.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.SimpleRequest}
-   */
-  public  static final class SimpleRequest extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.SimpleRequest)
-      SimpleRequestOrBuilder {
-    // Use SimpleRequest.newBuilder() to construct.
-    private SimpleRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private SimpleRequest() {
-      responseType_ = 0;
-      responseSize_ = 0;
-      fillUsername_ = false;
-      fillOauthScope_ = false;
-      responseCompression_ = 0;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-    }
-    private SimpleRequest(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
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-              if (!input.skipField(tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-              int rawValue = input.readEnum();
-
-              responseType_ = rawValue;
-              break;
-            }
-            case 16: {
-
-              responseSize_ = input.readInt32();
-              break;
-            }
-            case 26: {
-              io.grpc.testing.integration.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(io.grpc.testing.integration.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 32: {
-
-              fillUsername_ = input.readBool();
-              break;
-            }
-            case 40: {
-
-              fillOauthScope_ = input.readBool();
-              break;
-            }
-            case 48: {
-              int rawValue = input.readEnum();
-
-              responseCompression_ = rawValue;
-              break;
-            }
-            case 58: {
-              io.grpc.testing.integration.Messages.EchoStatus.Builder subBuilder = null;
-              if (responseStatus_ != null) {
-                subBuilder = responseStatus_.toBuilder();
-              }
-              responseStatus_ = input.readMessage(io.grpc.testing.integration.Messages.EchoStatus.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(responseStatus_);
-                responseStatus_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return io.grpc.testing.integration.Messages.internal_static_grpc_testing_SimpleRequest_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return io.grpc.testing.integration.Messages.internal_static_grpc_testing_SimpleRequest_fieldAccessorTable
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-    }
-
-    public static final int RESPONSE_TYPE_FIELD_NUMBER = 1;
-    private int responseType_;
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    public int getResponseTypeValue() {
-      return responseType_;
-    }
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    public io.grpc.testing.integration.Messages.PayloadType getResponseType() {
-      io.grpc.testing.integration.Messages.PayloadType result = io.grpc.testing.integration.Messages.PayloadType.valueOf(responseType_);
-      return result == null ? io.grpc.testing.integration.Messages.PayloadType.UNRECOGNIZED : result;
-    }
-
-    public static final int RESPONSE_SIZE_FIELD_NUMBER = 2;
-    private int responseSize_;
-    /**
-     * <pre>
-     * Desired payload size in the response from the server.
-     * If response_type is COMPRESSABLE, this denotes the size before compression.
-     * </pre>
-     *
-     * <code>int32 response_size = 2;</code>
-     */
-    public int getResponseSize() {
-      return responseSize_;
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 3;
-    private io.grpc.testing.integration.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public io.grpc.testing.integration.Messages.Payload getPayload() {
-      return payload_ == null ? io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    public static final int FILL_USERNAME_FIELD_NUMBER = 4;
-    private boolean fillUsername_;
-    /**
-     * <pre>
-     * Whether SimpleResponse should include username.
-     * </pre>
-     *
-     * <code>bool fill_username = 4;</code>
-     */
-    public boolean getFillUsername() {
-      return fillUsername_;
-    }
-
-    public static final int FILL_OAUTH_SCOPE_FIELD_NUMBER = 5;
-    private boolean fillOauthScope_;
-    /**
-     * <pre>
-     * Whether SimpleResponse should include OAuth scope.
-     * </pre>
-     *
-     * <code>bool fill_oauth_scope = 5;</code>
-     */
-    public boolean getFillOauthScope() {
-      return fillOauthScope_;
-    }
-
-    public static final int RESPONSE_COMPRESSION_FIELD_NUMBER = 6;
-    private int responseCompression_;
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    public int getResponseCompressionValue() {
-      return responseCompression_;
-    }
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    public io.grpc.testing.integration.Messages.CompressionType getResponseCompression() {
-      io.grpc.testing.integration.Messages.CompressionType result = io.grpc.testing.integration.Messages.CompressionType.valueOf(responseCompression_);
-      return result == null ? io.grpc.testing.integration.Messages.CompressionType.UNRECOGNIZED : result;
-    }
-
-    public static final int RESPONSE_STATUS_FIELD_NUMBER = 7;
-    private io.grpc.testing.integration.Messages.EchoStatus responseStatus_;
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public boolean hasResponseStatus() {
-      return responseStatus_ != null;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public io.grpc.testing.integration.Messages.EchoStatus getResponseStatus() {
-      return responseStatus_ == null ? io.grpc.testing.integration.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public io.grpc.testing.integration.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-      return getResponseStatus();
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (responseType_ != io.grpc.testing.integration.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        output.writeEnum(1, responseType_);
-      }
-      if (responseSize_ != 0) {
-        output.writeInt32(2, responseSize_);
-      }
-      if (payload_ != null) {
-        output.writeMessage(3, getPayload());
-      }
-      if (fillUsername_ != false) {
-        output.writeBool(4, fillUsername_);
-      }
-      if (fillOauthScope_ != false) {
-        output.writeBool(5, fillOauthScope_);
-      }
-      if (responseCompression_ != io.grpc.testing.integration.Messages.CompressionType.NONE.getNumber()) {
-        output.writeEnum(6, responseCompression_);
-      }
-      if (responseStatus_ != null) {
-        output.writeMessage(7, getResponseStatus());
-      }
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (responseType_ != io.grpc.testing.integration.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(1, responseType_);
-      }
-      if (responseSize_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(2, responseSize_);
-      }
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(3, getPayload());
-      }
-      if (fillUsername_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(4, fillUsername_);
-      }
-      if (fillOauthScope_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(5, fillOauthScope_);
-      }
-      if (responseCompression_ != io.grpc.testing.integration.Messages.CompressionType.NONE.getNumber()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(6, responseCompression_);
-      }
-      if (responseStatus_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(7, getResponseStatus());
-      }
-      memoizedSize = size;
-      return size;
-    }
-
-    private static final long serialVersionUID = 0L;
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof io.grpc.testing.integration.Messages.SimpleRequest)) {
-        return super.equals(obj);
-      }
-      io.grpc.testing.integration.Messages.SimpleRequest other = (io.grpc.testing.integration.Messages.SimpleRequest) obj;
-
-      boolean result = true;
-      result = result && responseType_ == other.responseType_;
-      result = result && (getResponseSize()
-          == other.getResponseSize());
-      result = result && (hasPayload() == other.hasPayload());
-      if (hasPayload()) {
-        result = result && getPayload()
-            .equals(other.getPayload());
-      }
-      result = result && (getFillUsername()
-          == other.getFillUsername());
-      result = result && (getFillOauthScope()
-          == other.getFillOauthScope());
-      result = result && responseCompression_ == other.responseCompression_;
-      result = result && (hasResponseStatus() == other.hasResponseStatus());
-      if (hasResponseStatus()) {
-        result = result && getResponseStatus()
-            .equals(other.getResponseStatus());
-      }
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + RESPONSE_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + responseType_;
-      hash = (37 * hash) + RESPONSE_SIZE_FIELD_NUMBER;
-      hash = (53 * hash) + getResponseSize();
-      if (hasPayload()) {
-        hash = (37 * hash) + PAYLOAD_FIELD_NUMBER;
-        hash = (53 * hash) + getPayload().hashCode();
-      }
-      hash = (37 * hash) + FILL_USERNAME_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getFillUsername());
-      hash = (37 * hash) + FILL_OAUTH_SCOPE_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getFillOauthScope());
-      hash = (37 * hash) + RESPONSE_COMPRESSION_FIELD_NUMBER;
-      hash = (53 * hash) + responseCompression_;
-      if (hasResponseStatus()) {
-        hash = (37 * hash) + RESPONSE_STATUS_FIELD_NUMBER;
-        hash = (53 * hash) + getResponseStatus().hashCode();
-      }
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
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-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
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-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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-      return PARSER.parseFrom(data, extensionRegistry);
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-        com.google.protobuf.ByteString data)
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-      return PARSER.parseFrom(data);
-    }
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-      return PARSER.parseFrom(data, extensionRegistry);
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-      return PARSER.parseFrom(data);
-    }
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-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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-      return PARSER.parseFrom(data, extensionRegistry);
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-      return com.google.protobuf.GeneratedMessageV3
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-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
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-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
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-        return io.grpc.testing.integration.Messages.internal_static_grpc_testing_SimpleRequest_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                io.grpc.testing.integration.Messages.SimpleRequest.class, io.grpc.testing.integration.Messages.SimpleRequest.Builder.class);
-      }
-
-      // Construct using io.grpc.testing.integration.Messages.SimpleRequest.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        responseType_ = 0;
-
-        responseSize_ = 0;
-
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-        fillUsername_ = false;
-
-        fillOauthScope_ = false;
-
-        responseCompression_ = 0;
-
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return io.grpc.testing.integration.Messages.internal_static_grpc_testing_SimpleRequest_descriptor;
-      }
-
-      public io.grpc.testing.integration.Messages.SimpleRequest getDefaultInstanceForType() {
-        return io.grpc.testing.integration.Messages.SimpleRequest.getDefaultInstance();
-      }
-
-      public io.grpc.testing.integration.Messages.SimpleRequest build() {
-        io.grpc.testing.integration.Messages.SimpleRequest result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public io.grpc.testing.integration.Messages.SimpleRequest buildPartial() {
-        io.grpc.testing.integration.Messages.SimpleRequest result = new io.grpc.testing.integration.Messages.SimpleRequest(this);
-        result.responseType_ = responseType_;
-        result.responseSize_ = responseSize_;
-        if (payloadBuilder_ == null) {
-          result.payload_ = payload_;
-        } else {
-          result.payload_ = payloadBuilder_.build();
-        }
-        result.fillUsername_ = fillUsername_;
-        result.fillOauthScope_ = fillOauthScope_;
-        result.responseCompression_ = responseCompression_;
-        if (responseStatusBuilder_ == null) {
-          result.responseStatus_ = responseStatus_;
-        } else {
-          result.responseStatus_ = responseStatusBuilder_.build();
-        }
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof io.grpc.testing.integration.Messages.SimpleRequest) {
-          return mergeFrom((io.grpc.testing.integration.Messages.SimpleRequest)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(io.grpc.testing.integration.Messages.SimpleRequest other) {
-        if (other == io.grpc.testing.integration.Messages.SimpleRequest.getDefaultInstance()) return this;
-        if (other.responseType_ != 0) {
-          setResponseTypeValue(other.getResponseTypeValue());
-        }
-        if (other.getResponseSize() != 0) {
-          setResponseSize(other.getResponseSize());
-        }
-        if (other.hasPayload()) {
-          mergePayload(other.getPayload());
-        }
-        if (other.getFillUsername() != false) {
-          setFillUsername(other.getFillUsername());
-        }
-        if (other.getFillOauthScope() != false) {
-          setFillOauthScope(other.getFillOauthScope());
-        }
-        if (other.responseCompression_ != 0) {
-          setResponseCompressionValue(other.getResponseCompressionValue());
-        }
-        if (other.hasResponseStatus()) {
-          mergeResponseStatus(other.getResponseStatus());
-        }
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        io.grpc.testing.integration.Messages.SimpleRequest parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.grpc.testing.integration.Messages.SimpleRequest) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int responseType_ = 0;
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public int getResponseTypeValue() {
-        return responseType_;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseTypeValue(int value) {
-        responseType_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public io.grpc.testing.integration.Messages.PayloadType getResponseType() {
-        io.grpc.testing.integration.Messages.PayloadType result = io.grpc.testing.integration.Messages.PayloadType.valueOf(responseType_);
-        return result == null ? io.grpc.testing.integration.Messages.PayloadType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseType(io.grpc.testing.integration.Messages.PayloadType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        responseType_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder clearResponseType() {
-        
-        responseType_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private int responseSize_ ;
-      /**
-       * <pre>
-       * Desired payload size in the response from the server.
-       * If response_type is COMPRESSABLE, this denotes the size before compression.
-       * </pre>
-       *
-       * <code>int32 response_size = 2;</code>
-       */
-      public int getResponseSize() {
-        return responseSize_;
-      }
-      /**
-       * <pre>
-       * Desired payload size in the response from the server.
-       * If response_type is COMPRESSABLE, this denotes the size before compression.
-       * </pre>
-       *
-       * <code>int32 response_size = 2;</code>
-       */
-      public Builder setResponseSize(int value) {
-        
-        responseSize_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload size in the response from the server.
-       * If response_type is COMPRESSABLE, this denotes the size before compression.
-       * </pre>
-       *
-       * <code>int32 response_size = 2;</code>
-       */
-      public Builder clearResponseSize() {
-        
-        responseSize_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private io.grpc.testing.integration.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.Payload, io.grpc.testing.integration.Messages.Payload.Builder, io.grpc.testing.integration.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public io.grpc.testing.integration.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(io.grpc.testing.integration.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(
-          io.grpc.testing.integration.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder mergePayload(io.grpc.testing.integration.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              io.grpc.testing.integration.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public io.grpc.testing.integration.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.Payload, io.grpc.testing.integration.Messages.Payload.Builder, io.grpc.testing.integration.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.grpc.testing.integration.Messages.Payload, io.grpc.testing.integration.Messages.Payload.Builder, io.grpc.testing.integration.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-
-      private boolean fillUsername_ ;
-      /**
-       * <pre>
-       * Whether SimpleResponse should include username.
-       * </pre>
-       *
-       * <code>bool fill_username = 4;</code>
-       */
-      public boolean getFillUsername() {
-        return fillUsername_;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include username.
-       * </pre>
-       *
-       * <code>bool fill_username = 4;</code>
-       */
-      public Builder setFillUsername(boolean value) {
-        
-        fillUsername_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include username.
-       * </pre>
-       *
-       * <code>bool fill_username = 4;</code>
-       */
-      public Builder clearFillUsername() {
-        
-        fillUsername_ = false;
-        onChanged();
-        return this;
-      }
-
-      private boolean fillOauthScope_ ;
-      /**
-       * <pre>
-       * Whether SimpleResponse should include OAuth scope.
-       * </pre>
-       *
-       * <code>bool fill_oauth_scope = 5;</code>
-       */
-      public boolean getFillOauthScope() {
-        return fillOauthScope_;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include OAuth scope.
-       * </pre>
-       *
-       * <code>bool fill_oauth_scope = 5;</code>
-       */
-      public Builder setFillOauthScope(boolean value) {
-        
-        fillOauthScope_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include OAuth scope.
-       * </pre>
-       *
-       * <code>bool fill_oauth_scope = 5;</code>
-       */
-      public Builder clearFillOauthScope() {
-        
-        fillOauthScope_ = false;
-        onChanged();
-        return this;
-      }
-
-      private int responseCompression_ = 0;
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public int getResponseCompressionValue() {
-        return responseCompression_;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public Builder setResponseCompressionValue(int value) {
-        responseCompression_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public io.grpc.testing.integration.Messages.CompressionType getResponseCompression() {
-        io.grpc.testing.integration.Messages.CompressionType result = io.grpc.testing.integration.Messages.CompressionType.valueOf(responseCompression_);
-        return result == null ? io.grpc.testing.integration.Messages.CompressionType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public Builder setResponseCompression(io.grpc.testing.integration.Messages.CompressionType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        responseCompression_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public Builder clearResponseCompression() {
-        
-        responseCompression_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private io.grpc.testing.integration.Messages.EchoStatus responseStatus_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.EchoStatus, io.grpc.testing.integration.Messages.EchoStatus.Builder, io.grpc.testing.integration.Messages.EchoStatusOrBuilder> responseStatusBuilder_;
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public boolean hasResponseStatus() {
-        return responseStatusBuilder_ != null || responseStatus_ != null;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public io.grpc.testing.integration.Messages.EchoStatus getResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          return responseStatus_ == null ? io.grpc.testing.integration.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        } else {
-          return responseStatusBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(io.grpc.testing.integration.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          responseStatus_ = value;
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(
-          io.grpc.testing.integration.Messages.EchoStatus.Builder builderForValue) {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = builderForValue.build();
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder mergeResponseStatus(io.grpc.testing.integration.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (responseStatus_ != null) {
-            responseStatus_ =
-              io.grpc.testing.integration.Messages.EchoStatus.newBuilder(responseStatus_).mergeFrom(value).buildPartial();
-          } else {
-            responseStatus_ = value;
-          }
-          onChanged();
-        } else {
-          responseStatusBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder clearResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-          onChanged();
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public io.grpc.testing.integration.Messages.EchoStatus.Builder getResponseStatusBuilder() {
-        
-        onChanged();
-        return getResponseStatusFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public io.grpc.testing.integration.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-        if (responseStatusBuilder_ != null) {
-          return responseStatusBuilder_.getMessageOrBuilder();
-        } else {
-          return responseStatus_ == null ?
-              io.grpc.testing.integration.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.EchoStatus, io.grpc.testing.integration.Messages.EchoStatus.Builder, io.grpc.testing.integration.Messages.EchoStatusOrBuilder> 
-          getResponseStatusFieldBuilder() {
-        if (responseStatusBuilder_ == null) {
-          responseStatusBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.grpc.testing.integration.Messages.EchoStatus, io.grpc.testing.integration.Messages.EchoStatus.Builder, io.grpc.testing.integration.Messages.EchoStatusOrBuilder>(
-                  getResponseStatus(),
-                  getParentForChildren(),
-                  isClean());
-          responseStatus_ = null;
-        }
-        return responseStatusBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.SimpleRequest)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.SimpleRequest)
-    private static final io.grpc.testing.integration.Messages.SimpleRequest DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new io.grpc.testing.integration.Messages.SimpleRequest();
-    }
-
-    public static io.grpc.testing.integration.Messages.SimpleRequest getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<SimpleRequest>
-        PARSER = new com.google.protobuf.AbstractParser<SimpleRequest>() {
-      public SimpleRequest parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new SimpleRequest(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<SimpleRequest> parser() {
-      return PARSER;
-    }
-
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-          return new SimpleContext(input, extensionRegistry);
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-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<SimpleContext> getParserForType() {
-      return PARSER;
-    }
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-    public io.grpc.testing.integration.Messages.SimpleContext getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
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-      // @@protoc_insertion_point(interface_extends:grpc.testing.StreamingInputCallRequest)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
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-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
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-    /**
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-     * </pre>
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-     */
-    io.grpc.testing.integration.Messages.Payload getPayload();
-    /**
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-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder();
-  }
-  /**
-   * <pre>
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-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingInputCallRequest}
-   */
-  public  static final class StreamingInputCallRequest extends
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-            case 10: {
-              io.grpc.testing.integration.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(io.grpc.testing.integration.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
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-     * <code>.grpc.testing.Payload payload = 1;</code>
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-     * <pre>
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-     *
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-      return payload_ == null ? io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
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-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
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-      return true;
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-    public void writeTo(com.google.protobuf.CodedOutputStream output)
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-        output.writeMessage(1, getPayload());
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-      if (size != -1) return size;
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-      if (payload_ != null) {
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-      memoizedSize = size;
-      return size;
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-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
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-      if (!(obj instanceof io.grpc.testing.integration.Messages.StreamingInputCallRequest)) {
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-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
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-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
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-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
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-    public static io.grpc.testing.integration.Messages.StreamingInputCallRequest parseFrom(byte[] data)
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-      return PARSER.parseFrom(data);
-    }
-    public static io.grpc.testing.integration.Messages.StreamingInputCallRequest parseFrom(
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-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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-      return PARSER.parseFrom(data, extensionRegistry);
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-      return com.google.protobuf.GeneratedMessageV3
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-      return com.google.protobuf.GeneratedMessageV3
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-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
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-    public static io.grpc.testing.integration.Messages.StreamingInputCallRequest parseFrom(
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-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
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-    public static Builder newBuilder() {
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-    public static Builder newBuilder(io.grpc.testing.integration.Messages.StreamingInputCallRequest prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
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-      /**
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-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
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-      public boolean hasPayload() {
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-       * <pre>
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-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public io.grpc.testing.integration.Messages.Payload getPayload() {
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-        } else {
-          return payloadBuilder_.getMessage();
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-      /**
-       * <pre>
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-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(io.grpc.testing.integration.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
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-          payload_ = value;
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-        } else {
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-
-        return this;
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-      /**
-       * <pre>
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-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(
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-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
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-
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-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder mergePayload(io.grpc.testing.integration.Messages.Payload value) {
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-
-        return this;
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-       * <pre>
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-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
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-       *
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-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
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-    public static com.google.protobuf.Parser<StreamingInputCallRequest> parser() {
-      return PARSER;
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-    public io.grpc.testing.integration.Messages.StreamingInputCallRequest getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
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-  public  static final class StreamingInputCallResponse extends
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-       * <code>int32 size = 1;</code>
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-        
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-        onChanged();
-        return this;
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-
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-       * </pre>
-       *
-       * <code>int32 interval_us = 2;</code>
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-      public int getIntervalUs() {
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-      /**
-       * <pre>
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-       * <code>int32 interval_us = 2;</code>
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-        
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-        return this;
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-       * <pre>
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-       * microseconds.
-       * </pre>
-       *
-       * <code>int32 interval_us = 2;</code>
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-
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-    private static final io.grpc.testing.integration.Messages.ResponseParameters DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new io.grpc.testing.integration.Messages.ResponseParameters();
-    }
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-      return PARSER;
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-      return DEFAULT_INSTANCE;
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-
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-
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
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-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    int getResponseTypeValue();
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
-     * stream.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    io.grpc.testing.integration.Messages.PayloadType getResponseType();
-
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    java.util.List<io.grpc.testing.integration.Messages.ResponseParameters> 
-        getResponseParametersList();
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    io.grpc.testing.integration.Messages.ResponseParameters getResponseParameters(int index);
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    int getResponseParametersCount();
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    java.util.List<? extends io.grpc.testing.integration.Messages.ResponseParametersOrBuilder> 
-        getResponseParametersOrBuilderList();
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    io.grpc.testing.integration.Messages.ResponseParametersOrBuilder getResponseParametersOrBuilder(
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-
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    io.grpc.testing.integration.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder();
-
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    int getResponseCompressionValue();
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    io.grpc.testing.integration.Messages.CompressionType getResponseCompression();
-
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    boolean hasResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    io.grpc.testing.integration.Messages.EchoStatus getResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    io.grpc.testing.integration.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder();
-  }
-  /**
-   * <pre>
-   * Server-streaming request.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingOutputCallRequest}
-   */
-  public  static final class StreamingOutputCallRequest extends
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-      // @@protoc_insertion_point(message_implements:grpc.testing.StreamingOutputCallRequest)
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-              io.grpc.testing.integration.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
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-              payload_ = input.readMessage(io.grpc.testing.integration.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
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-            case 48: {
-              int rawValue = input.readEnum();
-
-              responseCompression_ = rawValue;
-              break;
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-              io.grpc.testing.integration.Messages.EchoStatus.Builder subBuilder = null;
-              if (responseStatus_ != null) {
-                subBuilder = responseStatus_.toBuilder();
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-              responseStatus_ = input.readMessage(io.grpc.testing.integration.Messages.EchoStatus.parser(), extensionRegistry);
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-    private int responseType_;
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-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
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-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
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-      return result == null ? io.grpc.testing.integration.Messages.PayloadType.UNRECOGNIZED : result;
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-    public static final int RESPONSE_PARAMETERS_FIELD_NUMBER = 2;
-    private java.util.List<io.grpc.testing.integration.Messages.ResponseParameters> responseParameters_;
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public java.util.List<io.grpc.testing.integration.Messages.ResponseParameters> getResponseParametersList() {
-      return responseParameters_;
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public java.util.List<? extends io.grpc.testing.integration.Messages.ResponseParametersOrBuilder> 
-        getResponseParametersOrBuilderList() {
-      return responseParameters_;
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public int getResponseParametersCount() {
-      return responseParameters_.size();
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public io.grpc.testing.integration.Messages.ResponseParameters getResponseParameters(int index) {
-      return responseParameters_.get(index);
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public io.grpc.testing.integration.Messages.ResponseParametersOrBuilder getResponseParametersOrBuilder(
-        int index) {
-      return responseParameters_.get(index);
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 3;
-    private io.grpc.testing.integration.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public io.grpc.testing.integration.Messages.Payload getPayload() {
-      return payload_ == null ? io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    public static final int RESPONSE_COMPRESSION_FIELD_NUMBER = 6;
-    private int responseCompression_;
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    public int getResponseCompressionValue() {
-      return responseCompression_;
-    }
-    /**
-     * <pre>
-     * Compression algorithm to be used by the server for the response (stream)
-     * </pre>
-     *
-     * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-     */
-    public io.grpc.testing.integration.Messages.CompressionType getResponseCompression() {
-      io.grpc.testing.integration.Messages.CompressionType result = io.grpc.testing.integration.Messages.CompressionType.valueOf(responseCompression_);
-      return result == null ? io.grpc.testing.integration.Messages.CompressionType.UNRECOGNIZED : result;
-    }
-
-    public static final int RESPONSE_STATUS_FIELD_NUMBER = 7;
-    private io.grpc.testing.integration.Messages.EchoStatus responseStatus_;
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public boolean hasResponseStatus() {
-      return responseStatus_ != null;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public io.grpc.testing.integration.Messages.EchoStatus getResponseStatus() {
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-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + RESPONSE_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + responseType_;
-      if (getResponseParametersCount() > 0) {
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-      return this == DEFAULT_INSTANCE
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-     * Protobuf type {@code grpc.testing.StreamingOutputCallRequest}
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-    public static final class Builder extends
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-        // @@protoc_insertion_point(builder_implements:grpc.testing.StreamingOutputCallRequest)
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-        return this;
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-        return (Builder) super.clearOneof(oneof);
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-        return (Builder) super.setRepeatedField(field, index, value);
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-      public Builder addRepeatedField(
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-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
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-          super.mergeFrom(other);
-          return this;
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-        }
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-        return this;
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-      public final boolean isInitialized() {
-        return true;
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-
-      public Builder mergeFrom(
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-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
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-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
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-      private int responseType_ = 0;
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-       * <pre>
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-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
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-      public int getResponseTypeValue() {
-        return responseType_;
-      }
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-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
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-       */
-      public Builder setResponseTypeValue(int value) {
-        responseType_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
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-        return result == null ? io.grpc.testing.integration.Messages.PayloadType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseType(io.grpc.testing.integration.Messages.PayloadType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        responseType_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder clearResponseType() {
-        
-        responseType_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private java.util.List<io.grpc.testing.integration.Messages.ResponseParameters> responseParameters_ =
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-      private void ensureResponseParametersIsMutable() {
-        if (!((bitField0_ & 0x00000002) == 0x00000002)) {
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-
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public java.util.List<io.grpc.testing.integration.Messages.ResponseParameters> getResponseParametersList() {
-        if (responseParametersBuilder_ == null) {
-          return java.util.Collections.unmodifiableList(responseParameters_);
-        } else {
-          return responseParametersBuilder_.getMessageList();
-        }
-      }
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-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
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-       */
-      public int getResponseParametersCount() {
-        if (responseParametersBuilder_ == null) {
-          return responseParameters_.size();
-        } else {
-          return responseParametersBuilder_.getCount();
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
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-      public io.grpc.testing.integration.Messages.ResponseParameters getResponseParameters(int index) {
-        if (responseParametersBuilder_ == null) {
-          return responseParameters_.get(index);
-        } else {
-          return responseParametersBuilder_.getMessage(index);
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder setResponseParameters(
-          int index, io.grpc.testing.integration.Messages.ResponseParameters value) {
-        if (responseParametersBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureResponseParametersIsMutable();
-          responseParameters_.set(index, value);
-          onChanged();
-        } else {
-          responseParametersBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder setResponseParameters(
-          int index, io.grpc.testing.integration.Messages.ResponseParameters.Builder builderForValue) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          responseParametersBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(io.grpc.testing.integration.Messages.ResponseParameters value) {
-        if (responseParametersBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(value);
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(
-          int index, io.grpc.testing.integration.Messages.ResponseParameters value) {
-        if (responseParametersBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(index, value);
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(
-          io.grpc.testing.integration.Messages.ResponseParameters.Builder builderForValue) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(builderForValue.build());
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(
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-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(index, builderForValue.build());
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addAllResponseParameters(
-          java.lang.Iterable<? extends io.grpc.testing.integration.Messages.ResponseParameters> values) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          com.google.protobuf.AbstractMessageLite.Builder.addAll(
-              values, responseParameters_);
-          onChanged();
-        } else {
-          responseParametersBuilder_.addAllMessages(values);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder clearResponseParameters() {
-        if (responseParametersBuilder_ == null) {
-          responseParameters_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000002);
-          onChanged();
-        } else {
-          responseParametersBuilder_.clear();
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder removeResponseParameters(int index) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.remove(index);
-          onChanged();
-        } else {
-          responseParametersBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public io.grpc.testing.integration.Messages.ResponseParameters.Builder getResponseParametersBuilder(
-          int index) {
-        return getResponseParametersFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public io.grpc.testing.integration.Messages.ResponseParametersOrBuilder getResponseParametersOrBuilder(
-          int index) {
-        if (responseParametersBuilder_ == null) {
-          return responseParameters_.get(index);  } else {
-          return responseParametersBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public java.util.List<? extends io.grpc.testing.integration.Messages.ResponseParametersOrBuilder> 
-           getResponseParametersOrBuilderList() {
-        if (responseParametersBuilder_ != null) {
-          return responseParametersBuilder_.getMessageOrBuilderList();
-        } else {
-          return java.util.Collections.unmodifiableList(responseParameters_);
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public io.grpc.testing.integration.Messages.ResponseParameters.Builder addResponseParametersBuilder() {
-        return getResponseParametersFieldBuilder().addBuilder(
-            io.grpc.testing.integration.Messages.ResponseParameters.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public io.grpc.testing.integration.Messages.ResponseParameters.Builder addResponseParametersBuilder(
-          int index) {
-        return getResponseParametersFieldBuilder().addBuilder(
-            index, io.grpc.testing.integration.Messages.ResponseParameters.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public java.util.List<io.grpc.testing.integration.Messages.ResponseParameters.Builder> 
-           getResponseParametersBuilderList() {
-        return getResponseParametersFieldBuilder().getBuilderList();
-      }
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          io.grpc.testing.integration.Messages.ResponseParameters, io.grpc.testing.integration.Messages.ResponseParameters.Builder, io.grpc.testing.integration.Messages.ResponseParametersOrBuilder> 
-          getResponseParametersFieldBuilder() {
-        if (responseParametersBuilder_ == null) {
-          responseParametersBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-              io.grpc.testing.integration.Messages.ResponseParameters, io.grpc.testing.integration.Messages.ResponseParameters.Builder, io.grpc.testing.integration.Messages.ResponseParametersOrBuilder>(
-                  responseParameters_,
-                  ((bitField0_ & 0x00000002) == 0x00000002),
-                  getParentForChildren(),
-                  isClean());
-          responseParameters_ = null;
-        }
-        return responseParametersBuilder_;
-      }
-
-      private io.grpc.testing.integration.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.Payload, io.grpc.testing.integration.Messages.Payload.Builder, io.grpc.testing.integration.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public io.grpc.testing.integration.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(io.grpc.testing.integration.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(
-          io.grpc.testing.integration.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder mergePayload(io.grpc.testing.integration.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              io.grpc.testing.integration.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public io.grpc.testing.integration.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.Payload, io.grpc.testing.integration.Messages.Payload.Builder, io.grpc.testing.integration.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.grpc.testing.integration.Messages.Payload, io.grpc.testing.integration.Messages.Payload.Builder, io.grpc.testing.integration.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-
-      private int responseCompression_ = 0;
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public int getResponseCompressionValue() {
-        return responseCompression_;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public Builder setResponseCompressionValue(int value) {
-        responseCompression_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public io.grpc.testing.integration.Messages.CompressionType getResponseCompression() {
-        io.grpc.testing.integration.Messages.CompressionType result = io.grpc.testing.integration.Messages.CompressionType.valueOf(responseCompression_);
-        return result == null ? io.grpc.testing.integration.Messages.CompressionType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public Builder setResponseCompression(io.grpc.testing.integration.Messages.CompressionType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        responseCompression_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Compression algorithm to be used by the server for the response (stream)
-       * </pre>
-       *
-       * <code>.grpc.testing.CompressionType response_compression = 6;</code>
-       */
-      public Builder clearResponseCompression() {
-        
-        responseCompression_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private io.grpc.testing.integration.Messages.EchoStatus responseStatus_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.EchoStatus, io.grpc.testing.integration.Messages.EchoStatus.Builder, io.grpc.testing.integration.Messages.EchoStatusOrBuilder> responseStatusBuilder_;
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public boolean hasResponseStatus() {
-        return responseStatusBuilder_ != null || responseStatus_ != null;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public io.grpc.testing.integration.Messages.EchoStatus getResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          return responseStatus_ == null ? io.grpc.testing.integration.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        } else {
-          return responseStatusBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(io.grpc.testing.integration.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          responseStatus_ = value;
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(
-          io.grpc.testing.integration.Messages.EchoStatus.Builder builderForValue) {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = builderForValue.build();
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder mergeResponseStatus(io.grpc.testing.integration.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (responseStatus_ != null) {
-            responseStatus_ =
-              io.grpc.testing.integration.Messages.EchoStatus.newBuilder(responseStatus_).mergeFrom(value).buildPartial();
-          } else {
-            responseStatus_ = value;
-          }
-          onChanged();
-        } else {
-          responseStatusBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder clearResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-          onChanged();
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public io.grpc.testing.integration.Messages.EchoStatus.Builder getResponseStatusBuilder() {
-        
-        onChanged();
-        return getResponseStatusFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public io.grpc.testing.integration.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-        if (responseStatusBuilder_ != null) {
-          return responseStatusBuilder_.getMessageOrBuilder();
-        } else {
-          return responseStatus_ == null ?
-              io.grpc.testing.integration.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          io.grpc.testing.integration.Messages.EchoStatus, io.grpc.testing.integration.Messages.EchoStatus.Builder, io.grpc.testing.integration.Messages.EchoStatusOrBuilder> 
-          getResponseStatusFieldBuilder() {
-        if (responseStatusBuilder_ == null) {
-          responseStatusBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.grpc.testing.integration.Messages.EchoStatus, io.grpc.testing.integration.Messages.EchoStatus.Builder, io.grpc.testing.integration.Messages.EchoStatusOrBuilder>(
-                  getResponseStatus(),
-                  getParentForChildren(),
-                  isClean());
-          responseStatus_ = null;
-        }
-        return responseStatusBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.StreamingOutputCallRequest)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.StreamingOutputCallRequest)
-    private static final io.grpc.testing.integration.Messages.StreamingOutputCallRequest DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new io.grpc.testing.integration.Messages.StreamingOutputCallRequest();
-    }
-
-    public static io.grpc.testing.integration.Messages.StreamingOutputCallRequest getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<StreamingOutputCallRequest>
-        PARSER = new com.google.protobuf.AbstractParser<StreamingOutputCallRequest>() {
-      public StreamingOutputCallRequest parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new StreamingOutputCallRequest(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<StreamingOutputCallRequest> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<StreamingOutputCallRequest> getParserForType() {
-      return PARSER;
-    }
-
-    public io.grpc.testing.integration.Messages.StreamingOutputCallRequest getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface StreamingOutputCallResponseOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.StreamingOutputCallResponse)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    io.grpc.testing.integration.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder();
-  }
-  /**
-   * <pre>
-   * Server-streaming response, as configured by the request and parameters.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingOutputCallResponse}
-   */
-  public  static final class StreamingOutputCallResponse extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.StreamingOutputCallResponse)
-      StreamingOutputCallResponseOrBuilder {
-    // Use StreamingOutputCallResponse.newBuilder() to construct.
-    private StreamingOutputCallResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private StreamingOutputCallResponse() {
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-    }
-    private StreamingOutputCallResponse(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!input.skipField(tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-              io.grpc.testing.integration.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(io.grpc.testing.integration.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return io.grpc.testing.integration.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return io.grpc.testing.integration.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              io.grpc.testing.integration.Messages.StreamingOutputCallResponse.class, io.grpc.testing.integration.Messages.StreamingOutputCallResponse.Builder.class);
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 1;
-    private io.grpc.testing.integration.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public io.grpc.testing.integration.Messages.Payload getPayload() {
-      return payload_ == null ? io.grpc.testing.integration.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public io.grpc.testing.integration.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (payload_ != null) {
-        output.writeMessage(1, getPayload());
-      }
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getPayload());
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index f40fee246..000000000
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diff --git a/testing-proto/src/generated/main/java/io/grpc/testing/integration/Test.java b/testing-proto/src/generated/main/java/io/grpc/testing/integration/Test.java
deleted file mode 100644
index 44903d277..000000000
--- a/testing-proto/src/generated/main/java/io/grpc/testing/integration/Test.java
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@@ -1,74 +0,0 @@
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-// source: io/grpc/testing/integration/test.proto
-
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-  private Test() {}
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-      com.google.protobuf.ExtensionRegistryLite registry) {
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-
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new file mode 100644
index 000000000..a40539290
--- /dev/null
+++ b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleRequest.java
@@ -0,0 +1,385 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: io/grpc/testing/protobuf/simpleservice.proto
+
+package io.grpc.testing.protobuf;
+
+/**
+ * <pre>
+ * A simple request message type for test.
+ * </pre>
+ *
+ * Protobuf type {@code grpc.testing.SimpleRequest}
+ */
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+    com.google.protobuf.GeneratedMessageV3 implements
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+    SimpleRequestOrBuilder {
+  // Use SimpleRequest.newBuilder() to construct.
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+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
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+    if (!(obj instanceof io.grpc.testing.protobuf.SimpleRequest)) {
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+    io.grpc.testing.protobuf.SimpleRequest other = (io.grpc.testing.protobuf.SimpleRequest) obj;
+
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+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
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+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
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+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
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+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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+        .parseDelimitedWithIOException(PARSER, input);
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+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
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+    return com.google.protobuf.GeneratedMessageV3
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+    return this == DEFAULT_INSTANCE
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+   * </pre>
+   *
+   * Protobuf type {@code grpc.testing.SimpleRequest}
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+      com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
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+      io.grpc.testing.protobuf.SimpleRequest result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
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+      return result;
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+
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+      return (Builder) super.setRepeatedField(field, index, value);
+    }
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        Object value) {
+      return (Builder) super.addRepeatedField(field, value);
+    }
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof io.grpc.testing.protobuf.SimpleRequest) {
+        return mergeFrom((io.grpc.testing.protobuf.SimpleRequest)other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(io.grpc.testing.protobuf.SimpleRequest other) {
+      if (other == io.grpc.testing.protobuf.SimpleRequest.getDefaultInstance()) return this;
+      onChanged();
+      return this;
+    }
+
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      io.grpc.testing.protobuf.SimpleRequest parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage = (io.grpc.testing.protobuf.SimpleRequest) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+    public final Builder setUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return this;
+    }
+
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return this;
+    }
+
+
+    // @@protoc_insertion_point(builder_scope:grpc.testing.SimpleRequest)
+  }
+
+  // @@protoc_insertion_point(class_scope:grpc.testing.SimpleRequest)
+  private static final io.grpc.testing.protobuf.SimpleRequest DEFAULT_INSTANCE;
+  static {
+    DEFAULT_INSTANCE = new io.grpc.testing.protobuf.SimpleRequest();
+  }
+
+  public static io.grpc.testing.protobuf.SimpleRequest getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<SimpleRequest>
+      PARSER = new com.google.protobuf.AbstractParser<SimpleRequest>() {
+    public SimpleRequest parsePartialFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+        return new SimpleRequest(input, extensionRegistry);
+    }
+  };
+
+  public static com.google.protobuf.Parser<SimpleRequest> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<SimpleRequest> getParserForType() {
+    return PARSER;
+  }
+
+  public io.grpc.testing.protobuf.SimpleRequest getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+
+}
+
diff --git a/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleRequestOrBuilder.java b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleRequestOrBuilder.java
new file mode 100644
index 000000000..c75caa049
--- /dev/null
+++ b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleRequestOrBuilder.java
@@ -0,0 +1,9 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: io/grpc/testing/protobuf/simpleservice.proto
+
+package io.grpc.testing.protobuf;
+
+public interface SimpleRequestOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:grpc.testing.SimpleRequest)
+    com.google.protobuf.MessageOrBuilder {
+}
diff --git a/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleResponse.java b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleResponse.java
new file mode 100644
index 000000000..7113f60fd
--- /dev/null
+++ b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleResponse.java
@@ -0,0 +1,385 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: io/grpc/testing/protobuf/simpleservice.proto
+
+package io.grpc.testing.protobuf;
+
+/**
+ * <pre>
+ * A simple response message type for test.
+ * </pre>
+ *
+ * Protobuf type {@code grpc.testing.SimpleResponse}
+ */
+public  final class SimpleResponse extends
+    com.google.protobuf.GeneratedMessageV3 implements
+    // @@protoc_insertion_point(message_implements:grpc.testing.SimpleResponse)
+    SimpleResponseOrBuilder {
+  // Use SimpleResponse.newBuilder() to construct.
+  private SimpleResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+  private SimpleResponse() {
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet
+  getUnknownFields() {
+    return com.google.protobuf.UnknownFieldSet.getDefaultInstance();
+  }
+  private SimpleResponse(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          default: {
+            if (!input.skipField(tag)) {
+              done = true;
+            }
+            break;
+          }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(
+          e).setUnfinishedMessage(this);
+    } finally {
+      makeExtensionsImmutable();
+    }
+  }
+  public static final com.google.protobuf.Descriptors.Descriptor
+      getDescriptor() {
+    return io.grpc.testing.protobuf.SimpleServiceProto.internal_static_grpc_testing_SimpleResponse_descriptor;
+  }
+
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return io.grpc.testing.protobuf.SimpleServiceProto.internal_static_grpc_testing_SimpleResponse_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            io.grpc.testing.protobuf.SimpleResponse.class, io.grpc.testing.protobuf.SimpleResponse.Builder.class);
+  }
+
+  private byte memoizedIsInitialized = -1;
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  public void writeTo(com.google.protobuf.CodedOutputStream output)
+                      throws java.io.IOException {
+  }
+
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    memoizedSize = size;
+    return size;
+  }
+
+  private static final long serialVersionUID = 0L;
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+     return true;
+    }
+    if (!(obj instanceof io.grpc.testing.protobuf.SimpleResponse)) {
+      return super.equals(obj);
+    }
+    io.grpc.testing.protobuf.SimpleResponse other = (io.grpc.testing.protobuf.SimpleResponse) obj;
+
+    boolean result = true;
+    return result;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      java.nio.ByteBuffer data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      java.nio.ByteBuffer data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      byte[] data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseDelimitedFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseDelimitedFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      com.google.protobuf.CodedInputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static io.grpc.testing.protobuf.SimpleResponse parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+
+  public Builder newBuilderForType() { return newBuilder(); }
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+  public static Builder newBuilder(io.grpc.testing.protobuf.SimpleResponse prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE
+        ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(
+      com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   * <pre>
+   * A simple response message type for test.
+   * </pre>
+   *
+   * Protobuf type {@code grpc.testing.SimpleResponse}
+   */
+  public static final class Builder extends
+      com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+      // @@protoc_insertion_point(builder_implements:grpc.testing.SimpleResponse)
+      io.grpc.testing.protobuf.SimpleResponseOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.grpc.testing.protobuf.SimpleServiceProto.internal_static_grpc_testing_SimpleResponse_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return io.grpc.testing.protobuf.SimpleServiceProto.internal_static_grpc_testing_SimpleResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              io.grpc.testing.protobuf.SimpleResponse.class, io.grpc.testing.protobuf.SimpleResponse.Builder.class);
+    }
+
+    // Construct using io.grpc.testing.protobuf.SimpleResponse.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3
+              .alwaysUseFieldBuilders) {
+      }
+    }
+    public Builder clear() {
+      super.clear();
+      return this;
+    }
+
+    public com.google.protobuf.Descriptors.Descriptor
+        getDescriptorForType() {
+      return io.grpc.testing.protobuf.SimpleServiceProto.internal_static_grpc_testing_SimpleResponse_descriptor;
+    }
+
+    public io.grpc.testing.protobuf.SimpleResponse getDefaultInstanceForType() {
+      return io.grpc.testing.protobuf.SimpleResponse.getDefaultInstance();
+    }
+
+    public io.grpc.testing.protobuf.SimpleResponse build() {
+      io.grpc.testing.protobuf.SimpleResponse result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    public io.grpc.testing.protobuf.SimpleResponse buildPartial() {
+      io.grpc.testing.protobuf.SimpleResponse result = new io.grpc.testing.protobuf.SimpleResponse(this);
+      onBuilt();
+      return result;
+    }
+
+    public Builder clone() {
+      return (Builder) super.clone();
+    }
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        Object value) {
+      return (Builder) super.setField(field, value);
+    }
+    public Builder clearField(
+        com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return (Builder) super.clearField(field);
+    }
+    public Builder clearOneof(
+        com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return (Builder) super.clearOneof(oneof);
+    }
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        int index, Object value) {
+      return (Builder) super.setRepeatedField(field, index, value);
+    }
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        Object value) {
+      return (Builder) super.addRepeatedField(field, value);
+    }
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof io.grpc.testing.protobuf.SimpleResponse) {
+        return mergeFrom((io.grpc.testing.protobuf.SimpleResponse)other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(io.grpc.testing.protobuf.SimpleResponse other) {
+      if (other == io.grpc.testing.protobuf.SimpleResponse.getDefaultInstance()) return this;
+      onChanged();
+      return this;
+    }
+
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      io.grpc.testing.protobuf.SimpleResponse parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage = (io.grpc.testing.protobuf.SimpleResponse) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+    public final Builder setUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return this;
+    }
+
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return this;
+    }
+
+
+    // @@protoc_insertion_point(builder_scope:grpc.testing.SimpleResponse)
+  }
+
+  // @@protoc_insertion_point(class_scope:grpc.testing.SimpleResponse)
+  private static final io.grpc.testing.protobuf.SimpleResponse DEFAULT_INSTANCE;
+  static {
+    DEFAULT_INSTANCE = new io.grpc.testing.protobuf.SimpleResponse();
+  }
+
+  public static io.grpc.testing.protobuf.SimpleResponse getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<SimpleResponse>
+      PARSER = new com.google.protobuf.AbstractParser<SimpleResponse>() {
+    public SimpleResponse parsePartialFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+        return new SimpleResponse(input, extensionRegistry);
+    }
+  };
+
+  public static com.google.protobuf.Parser<SimpleResponse> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<SimpleResponse> getParserForType() {
+    return PARSER;
+  }
+
+  public io.grpc.testing.protobuf.SimpleResponse getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+
+}
+
diff --git a/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleResponseOrBuilder.java b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleResponseOrBuilder.java
new file mode 100644
index 000000000..d11f0daf6
--- /dev/null
+++ b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleResponseOrBuilder.java
@@ -0,0 +1,9 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: io/grpc/testing/protobuf/simpleservice.proto
+
+package io.grpc.testing.protobuf;
+
+public interface SimpleResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:grpc.testing.SimpleResponse)
+    com.google.protobuf.MessageOrBuilder {
+}
diff --git a/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleServiceProto.java b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleServiceProto.java
new file mode 100644
index 000000000..0a78e7a02
--- /dev/null
+++ b/testing-proto/src/generated/main/java/io/grpc/testing/protobuf/SimpleServiceProto.java
@@ -0,0 +1,77 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: io/grpc/testing/protobuf/simpleservice.proto
+
+package io.grpc.testing.protobuf;
+
+public final class SimpleServiceProto {
+  private SimpleServiceProto() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_grpc_testing_SimpleRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_grpc_testing_SimpleRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_grpc_testing_SimpleResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_grpc_testing_SimpleResponse_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n,io/grpc/testing/protobuf/simpleservice" +
+      ".proto\022\014grpc.testing\"\017\n\rSimpleRequest\"\020\n" +
+      "\016SimpleResponse2\327\002\n\rSimpleService\022G\n\010Una" +
+      "ryRpc\022\033.grpc.testing.SimpleRequest\032\034.grp" +
+      "c.testing.SimpleResponse\"\000\022S\n\022ClientStre" +
+      "amingRpc\022\033.grpc.testing.SimpleRequest\032\034." +
+      "grpc.testing.SimpleResponse\"\000(\001\022S\n\022Serve" +
+      "rStreamingRpc\022\033.grpc.testing.SimpleReque" +
+      "st\032\034.grpc.testing.SimpleResponse\"\0000\001\022S\n\020" +
+      "BidiStreamingRpc\022\033.grpc.testing.SimpleRe",
+      "quest\032\034.grpc.testing.SimpleResponse\"\000(\0010" +
+      "\001B0\n\030io.grpc.testing.protobufB\022SimpleSer" +
+      "viceProtoP\001b\006proto3"
+    };
+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
+          public com.google.protobuf.ExtensionRegistry assignDescriptors(
+              com.google.protobuf.Descriptors.FileDescriptor root) {
+            descriptor = root;
+            return null;
+          }
+        };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        }, assigner);
+    internal_static_grpc_testing_SimpleRequest_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_grpc_testing_SimpleRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_grpc_testing_SimpleRequest_descriptor,
+        new java.lang.String[] { });
+    internal_static_grpc_testing_SimpleResponse_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_grpc_testing_SimpleResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_grpc_testing_SimpleResponse_descriptor,
+        new java.lang.String[] { });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}
diff --git a/testing-proto/src/main/proto/io/grpc/testing/integration/empty.proto b/testing-proto/src/main/proto/io/grpc/testing/integration/empty.proto
deleted file mode 100644
index 5c571ed54..000000000
--- a/testing-proto/src/main/proto/io/grpc/testing/integration/empty.proto
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2015, gRPC Authors
-// All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// 
-//     http://www.apache.org/licenses/LICENSE-2.0
-// 
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-syntax = "proto2";
-
-package grpc.testing;
-
-option java_package = "com.google.protobuf";
-option java_outer_classname = "EmptyProtos";
-
-// An empty message that you can re-use to avoid defining duplicated empty
-// messages in your project. A typical example is to use it as argument or the
-// return value of a service API. For instance:
-//
-//   service Foo {
-//     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
-//   };
-//
-message Empty {}
diff --git a/testing-proto/src/main/proto/io/grpc/testing/integration/messages.proto b/testing-proto/src/main/proto/io/grpc/testing/integration/messages.proto
deleted file mode 100644
index 4e3e8b357..000000000
--- a/testing-proto/src/main/proto/io/grpc/testing/integration/messages.proto
+++ /dev/null
@@ -1,163 +0,0 @@
-// Copyright 2015, gRPC Authors
-// All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// 
-//     http://www.apache.org/licenses/LICENSE-2.0
-// 
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// Message definitions to be used by integration test service definitions.
-
-syntax = "proto3";
-
-package grpc.testing;
-
-option java_package = "io.grpc.testing.integration";
-
-// The type of payload that should be returned.
-enum PayloadType {
-  // Compressable text format.
-  COMPRESSABLE = 0;
-
-  // Uncompressable binary format.
-  UNCOMPRESSABLE = 1;
-
-  // Randomly chosen from all other formats defined in this enum.
-  RANDOM = 2;
-}
-
-// Compression algorithms
-enum CompressionType {
-  // No compression
-  NONE = 0;
-  GZIP = 1;
-  DEFLATE = 2;
-}
-
-// A block of data, to simply increase gRPC message size.
-message Payload {
-  // The type of data in body.
-  PayloadType type = 1;
-  // Primary contents of payload.
-  bytes body = 2;
-}
-
-// A protobuf representation for grpc status. This is used by test
-// clients to specify a status that the server should attempt to return.
-message EchoStatus {
-  int32 code = 1;
-  string message = 2;
-}
-
-// Unary request.
-message SimpleRequest {
-  // Desired payload type in the response from the server.
-  // If response_type is RANDOM, server randomly chooses one from other formats.
-  PayloadType response_type = 1;
-
-  // Desired payload size in the response from the server.
-  // If response_type is COMPRESSABLE, this denotes the size before compression.
-  int32 response_size = 2;
-
-  // Optional input payload sent along with the request.
-  Payload payload = 3;
-
-  // Whether SimpleResponse should include username.
-  bool fill_username = 4;
-
-  // Whether SimpleResponse should include OAuth scope.
-  bool fill_oauth_scope = 5;
-
-  // Compression algorithm to be used by the server for the response (stream)
-  CompressionType response_compression = 6;
-
-  // Whether server should return a given status
-  EchoStatus response_status = 7;
-}
-
-// Unary response, as configured by the request.
-message SimpleResponse {
-  // Payload to increase message size.
-  Payload payload = 1;
-  // The user the request came from, for verifying authentication was
-  // successful when the client expected it.
-  string username = 2;
-  // OAuth scope.
-  string oauth_scope = 3;
-}
-
-message SimpleContext {
-  string value = 1;
-}
-
-// Client-streaming request.
-message StreamingInputCallRequest {
-  // Optional input payload sent along with the request.
-  Payload payload = 1;
-
-  // Not expecting any payload from the response.
-}
-
-// Client-streaming response.
-message StreamingInputCallResponse {
-  // Aggregated size of payloads received from the client.
-  int32 aggregated_payload_size = 1;
-}
-
-// Configuration for a particular response.
-message ResponseParameters {
-  // Desired payload sizes in responses from the server.
-  // If response_type is COMPRESSABLE, this denotes the size before compression.
-  int32 size = 1;
-
-  // Desired interval between consecutive responses in the response stream in
-  // microseconds.
-  int32 interval_us = 2;
-}
-
-// Server-streaming request.
-message StreamingOutputCallRequest {
-  // Desired payload type in the response from the server.
-  // If response_type is RANDOM, the payload from each response in the stream
-  // might be of different types. This is to simulate a mixed type of payload
-  // stream.
-  PayloadType response_type = 1;
-
-  // Configuration for each expected response message.
-  repeated ResponseParameters response_parameters = 2;
-
-  // Optional input payload sent along with the request.
-  Payload payload = 3;
-
-  // Compression algorithm to be used by the server for the response (stream)
-  CompressionType response_compression = 6;
-
-  // Whether server should return a given status
-  EchoStatus response_status = 7;
-}
-
-// Server-streaming response, as configured by the request and parameters.
-message StreamingOutputCallResponse {
-  // Payload to increase response size.
-  Payload payload = 1;
-}
-
-// For reconnect interop test only.
-// Client tells server what reconnection parameters it used.
-message ReconnectParams {
-  int32 max_reconnect_backoff_ms = 1;
-}
-
-// For reconnect interop test only.
-// Server tells client whether its reconnects are following the spec and the
-// reconnect backoffs it saw.
-message ReconnectInfo {
-  bool passed = 1;
-  repeated int32 backoff_ms = 2;
-}
diff --git a/testing-proto/src/main/proto/io/grpc/testing/integration/metrics.proto b/testing-proto/src/main/proto/io/grpc/testing/integration/metrics.proto
deleted file mode 100644
index febf7aeac..000000000
--- a/testing-proto/src/main/proto/io/grpc/testing/integration/metrics.proto
+++ /dev/null
@@ -1,51 +0,0 @@
-// Copyright 2015-2016, gRPC Authors
-// All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// 
-//     http://www.apache.org/licenses/LICENSE-2.0
-// 
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// Contains the definitions for a metrics service and the type of metrics
-// exposed by the service.
-//
-// Currently, 'Gauge' (i.e a metric that represents the measured value of
-// something at an instant of time) is the only metric type supported by the
-// service.
-syntax = "proto3";
-
-package grpc.testing;
-
-option java_package = "io.grpc.testing.integration";
-
-// Reponse message containing the gauge name and value
-message GaugeResponse {
-  string name = 1;
-  oneof value {
-    int64 long_value = 2;
-    double double_value = 3;
-    string string_value = 4;
-  }
-}
-
-// Request message containing the gauge name
-message GaugeRequest {
-  string name = 1;
-}
-
-message EmptyMessage {}
-
-service MetricsService {
-  // Returns the values of all the gauges that are currently being maintained by
-  // the service
-  rpc GetAllGauges(EmptyMessage) returns (stream GaugeResponse);
-
-  // Returns the value of one gauge
-  rpc GetGauge(GaugeRequest) returns (GaugeResponse);
-}
diff --git a/testing-proto/src/main/proto/io/grpc/testing/integration/test.proto b/testing-proto/src/main/proto/io/grpc/testing/integration/test.proto
deleted file mode 100644
index aeb30f354..000000000
--- a/testing-proto/src/main/proto/io/grpc/testing/integration/test.proto
+++ /dev/null
@@ -1,79 +0,0 @@
-// Copyright 2015, gRPC Authors
-// All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// 
-//     http://www.apache.org/licenses/LICENSE-2.0
-// 
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// An integration test service that covers all the method signature permutations
-// of unary/streaming requests/responses.
-syntax = "proto3";
-
-import "io/grpc/testing/integration/empty.proto";
-import "io/grpc/testing/integration/messages.proto";
-
-package grpc.testing;
-
-option java_package = "io.grpc.testing.integration";
-
-// A simple service to test the various types of RPCs and experiment with
-// performance with various types of payload.
-service TestService {
-  // One empty request followed by one empty response.
-  rpc EmptyCall(grpc.testing.Empty) returns (grpc.testing.Empty);
-
-  // One request followed by one response.
-  rpc UnaryCall(SimpleRequest) returns (SimpleResponse);
-
-  // One request followed by one response. Response has cache control
-  // headers set such that a caching HTTP proxy (such as GFE) can
-  // satisfy subsequent requests.
-  rpc CacheableUnaryCall(SimpleRequest) returns (SimpleResponse);
-
-  // One request followed by a sequence of responses (streamed download).
-  // The server returns the payload with client desired type and sizes.
-  rpc StreamingOutputCall(StreamingOutputCallRequest)
-      returns (stream StreamingOutputCallResponse);
-
-  // A sequence of requests followed by one response (streamed upload).
-  // The server returns the aggregated size of client payload as the result.
-  rpc StreamingInputCall(stream StreamingInputCallRequest)
-      returns (StreamingInputCallResponse);
-
-  // A sequence of requests with each request served by the server immediately.
-  // As one request could lead to multiple responses, this interface
-  // demonstrates the idea of full duplexing.
-  rpc FullDuplexCall(stream StreamingOutputCallRequest)
-      returns (stream StreamingOutputCallResponse);
-
-  // A sequence of requests followed by a sequence of responses.
-  // The server buffers all the client requests and then serves them in order. A
-  // stream of responses are returned to the client when the server starts with
-  // first request.
-  rpc HalfDuplexCall(stream StreamingOutputCallRequest)
-      returns (stream StreamingOutputCallResponse);
-
-  // The test server will not implement this method. It will be used
-  // to test the behavior when clients call unimplemented methods.
-  rpc UnimplementedCall(grpc.testing.Empty) returns (grpc.testing.Empty);
-}
-
-// A simple service NOT implemented at servers so clients can test for
-// that case.
-service UnimplementedService {
-  // A call that no server should implement
-  rpc UnimplementedCall(grpc.testing.Empty) returns(grpc.testing.Empty);
-}
-
-// A service used to control reconnect server.
-service ReconnectService {
-  rpc Start(grpc.testing.Empty) returns (grpc.testing.Empty);
-  rpc Stop(grpc.testing.Empty) returns (grpc.testing.ReconnectInfo);
-}
diff --git a/testing-proto/src/main/proto/io/grpc/testing/protobuf/simpleservice.proto b/testing-proto/src/main/proto/io/grpc/testing/protobuf/simpleservice.proto
new file mode 100644
index 000000000..bc1731dee
--- /dev/null
+++ b/testing-proto/src/main/proto/io/grpc/testing/protobuf/simpleservice.proto
@@ -0,0 +1,47 @@
+// Copyright 2017, gRPC Authors
+// All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// An integration test service that covers all the method signature permutations
+// of unary/streaming requests/responses.
+
+syntax = "proto3";
+
+package grpc.testing;
+
+option java_package = "io.grpc.testing.protobuf";
+option java_outer_classname = "SimpleServiceProto";
+option java_multiple_files = true;
+
+// A simple service for test.
+service SimpleService {
+  // Simple unary RPC.
+  rpc UnaryRpc (SimpleRequest) returns (SimpleResponse) {}
+
+  // Simple client-to-server streaming RPC.
+  rpc ClientStreamingRpc (stream SimpleRequest) returns (SimpleResponse) {}
+
+  // Simple server-to-client streaming RPC.
+  rpc ServerStreamingRpc (SimpleRequest) returns (stream SimpleResponse) {}
+
+  // Simple bidirectional streaming RPC.
+  rpc BidiStreamingRpc (stream SimpleRequest) returns (stream SimpleResponse) {}
+}
+
+// A simple request message type for test.
+message SimpleRequest {
+}
+
+// A simple response message type for test.
+message SimpleResponse {
+}
diff --git a/testing-proto/src/test/java/io/grpc/testing/protobuf/SimpleServiceTest.java b/testing-proto/src/test/java/io/grpc/testing/protobuf/SimpleServiceTest.java
new file mode 100644
index 000000000..771b20f26
--- /dev/null
+++ b/testing-proto/src/test/java/io/grpc/testing/protobuf/SimpleServiceTest.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017, gRPC Authors All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.grpc.testing.protobuf;
+
+import static io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING;
+import static io.grpc.MethodDescriptor.MethodType.CLIENT_STREAMING;
+import static io.grpc.MethodDescriptor.MethodType.SERVER_STREAMING;
+import static io.grpc.MethodDescriptor.MethodType.UNARY;
+import static org.junit.Assert.assertEquals;
+
+import io.grpc.MethodDescriptor;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Test to verify that the proto file simpleservice.proto generates the expected service. */
+@RunWith(JUnit4.class)
+public class SimpleServiceTest {
+  @Test
+  public void serviceDescriptor() {
+    assertEquals("grpc.testing.SimpleService", SimpleServiceGrpc.getServiceDescriptor().getName());
+  }
+
+  @Test
+  public void serviceMethodDescriotrs() {
+    MethodDescriptor<SimpleRequest, SimpleResponse> genericTypeShouldMatchWhenAssigned;
+
+    genericTypeShouldMatchWhenAssigned = SimpleServiceGrpc.METHOD_UNARY_RPC;
+    assertEquals(UNARY, genericTypeShouldMatchWhenAssigned.getType());
+
+    genericTypeShouldMatchWhenAssigned = SimpleServiceGrpc.METHOD_CLIENT_STREAMING_RPC;
+    assertEquals(CLIENT_STREAMING, genericTypeShouldMatchWhenAssigned.getType());
+
+    genericTypeShouldMatchWhenAssigned = SimpleServiceGrpc.METHOD_SERVER_STREAMING_RPC;
+    assertEquals(SERVER_STREAMING, genericTypeShouldMatchWhenAssigned.getType());
+
+    genericTypeShouldMatchWhenAssigned = SimpleServiceGrpc.METHOD_BIDI_STREAMING_RPC;
+    assertEquals(BIDI_STREAMING, genericTypeShouldMatchWhenAssigned.getType());
+  }
+}