1 files changed, 12 insertions, 1 deletions
diff --git a/proto/icing/proto/document.proto b/proto/icing/proto/document.proto
index 1a501e7..919769e 100644
--- a/proto/icing/proto/document.proto
+++ b/proto/icing/proto/document.proto
@@ -78,7 +78,7 @@ message DocumentProto {
 }
 
 // Holds a property field of the Document.
-// Next tag: 8
+// Next tag: 9
 message PropertyProto {
   // Name of the property.
   // See icing.lib.PropertyConfigProto.property_name for details.
@@ -92,6 +92,17 @@ message PropertyProto {
   repeated bool boolean_values = 5;
   repeated bytes bytes_values = 6;
   repeated DocumentProto document_values = 7;
+
+  message VectorProto {
+    // The values of the vector.
+    repeated float values = 1 [packed = true];
+    // The model signature of the vector, which can be any string used to
+    // identify the model, so that embedding searches can be restricted only to
+    // the vectors with the matching target signature.
+    // Eg: "universal-sentence-encoder_v0"
+    optional string model_signature = 2;
+  }
+  repeated VectorProto vector_values = 8;
 }
 
 // Result of a call to IcingSearchEngine.Put