chore: Add YAML support for v2.3 data model

Signed-off-by: Keith Zantow <kzantow@gmail.com>

10 files changed, 933 insertions, 10 deletions

diff --git a/examples/sample-docs/yaml/SPDXYAMLExample-2.3.spdx.yaml b/examples/sample-docs/yaml/SPDXYAMLExample-2.3.spdx.yaml
new file mode 100644
index 0000000..611b74c
--- /dev/null
+++ b/examples/sample-docs/yaml/SPDXYAMLExample-2.3.spdx.yaml
@@ -0,0 +1,412 @@
+SPDXID: SPDXRef-DOCUMENT
+annotations:
+- annotationDate: "2010-01-29T18:30:22Z"
+  annotationType: OTHER
+  annotator: 'Person: Jane Doe ()'
+  comment: Document level annotation
+- annotationDate: "2010-02-10T00:00:00Z"
+  annotationType: REVIEW
+  annotator: 'Person: Joe Reviewer'
+  comment: This is just an example.  Some of the non-standard licenses look like they
+    are actually BSD 3 clause licenses
+- annotationDate: "2011-03-13T00:00:00Z"
+  annotationType: REVIEW
+  annotator: 'Person: Suzanne Reviewer'
+  comment: Another example reviewer.
+comment: This document was created using SPDX 2.0 using licenses from the web site.
+creationInfo:
+  comment: |-
+    This package has been shipped in source and binary form.
+    The binaries were created with gcc 4.5.1 and expect to link to
+    compatible system run time libraries.
+  created: "2010-01-29T18:30:22Z"
+  creators:
+  - 'Tool: LicenseFind-1.0'
+  - 'Organization: ExampleCodeInspect ()'
+  - 'Person: Jane Doe ()'
+  licenseListVersion: "3.9"
+dataLicense: CC0-1.0
+documentNamespace: http://spdx.org/spdxdocs/spdx-example-444504E0-4F89-41D3-9A0C-0305E82C3301
+externalDocumentRefs:
+- checksum:
+    algorithm: SHA1
+    checksumValue: d6a770ba38583ed4bb4525bd96e50461655d2759
+  externalDocumentId: DocumentRef-spdx-tool-1.2
+  spdxDocument: http://spdx.org/spdxdocs/spdx-tools-v1.2-3F2504E0-4F89-41D3-9A0C-0305E82C3301
+files:
+- SPDXID: SPDXRef-DoapSource
+  checksums:
+  - algorithm: SHA1
+    checksumValue: 2fd4e1c67a2d28fced849ee1bb76e7391b93eb12
+  copyrightText: Copyright 2010, 2011 Source Auditor Inc.
+  fileContributors:
+  - Protecode Inc.
+  - SPDX Technical Team Members
+  - Open Logic Inc.
+  - Source Auditor Inc.
+  - Black Duck Software In.c
+  fileName: ./src/org/spdx/parser/DOAPProject.java
+  fileTypes:
+  - SOURCE
+  licenseConcluded: Apache-2.0
+  licenseInfoInFiles:
+  - Apache-2.0
+- SPDXID: SPDXRef-CommonsLangSrc
+  checksums:
+  - algorithm: SHA1
+    checksumValue: c2b4e1c67a2d28fced849ee1bb76e7391b93f125
+  comment: This file is used by Jena
+  copyrightText: Copyright 2001-2011 The Apache Software Foundation
+  fileContributors:
+  - Apache Software Foundation
+  fileName: ./lib-source/commons-lang3-3.1-sources.jar
+  fileTypes:
+  - ARCHIVE
+  licenseConcluded: Apache-2.0
+  licenseInfoInFiles:
+  - Apache-2.0
+  noticeText: |-
+    Apache Commons Lang
+    Copyright 2001-2011 The Apache Software Foundation
+
+    This product includes software developed by
+    The Apache Software Foundation (http://www.apache.org/).
+
+    This product includes software from the Spring Framework,
+    under the Apache License 2.0 (see: StringUtils.containsWhitespace())
+- SPDXID: SPDXRef-JenaLib
+  checksums:
+  - algorithm: SHA1
+    checksumValue: 3ab4e1c67a2d28fced849ee1bb76e7391b93f125
+  comment: This file belongs to Jena
+  copyrightText: (c) Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+    2009 Hewlett-Packard Development Company, LP
+  fileContributors:
+  - Apache Software Foundation
+  - Hewlett Packard Inc.
+  fileName: ./lib-source/jena-2.6.3-sources.jar
+  fileTypes:
+  - ARCHIVE
+  licenseComments: This license is used by Jena
+  licenseConcluded: LicenseRef-1
+  licenseInfoInFiles:
+  - LicenseRef-1
+- SPDXID: SPDXRef-File
+  annotations:
+  - annotationDate: "2011-01-29T18:30:22Z"
+    annotationType: OTHER
+    annotator: 'Person: File Commenter'
+    comment: File level annotation
+  checksums:
+  - algorithm: SHA1
+    checksumValue: d6a770ba38583ed4bb4525bd96e50461655d2758
+  - algorithm: MD5
+    checksumValue: 624c1abb3664f4b35547e7c73864ad24
+  comment: |-
+    The concluded license was taken from the package level that the file was included in.
+    This information was found in the COPYING.txt file in the xyz directory.
+  copyrightText: Copyright 2008-2010 John Smith
+  fileContributors:
+  - The Regents of the University of California
+  - Modified by Paul Mundt lethal@linux-sh.org
+  - IBM Corporation
+  fileName: ./package/foo.c
+  fileTypes:
+  - SOURCE
+  licenseComments: The concluded license was taken from the package level that the
+    file was included in.
+  licenseConcluded: (LGPL-2.0-only OR LicenseRef-2)
+  licenseInfoInFiles:
+  - GPL-2.0-only
+  - LicenseRef-2
+  noticeText: "Copyright (c) 2001 Aaron Lehmann aaroni@vitelus.com\n\nPermission is
+    hereby granted, free of charge, to any person obtaining a copy of this software
+    and associated documentation files (the �Software�), to deal in the Software without
+    restriction, including without limitation the rights to use, copy, modify, merge,
+    publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+    persons to whom the Software is furnished to do so, subject to the following conditions:
+    \nThe above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED �AS
+    IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+    TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    \ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+    DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+    ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+    IN THE SOFTWARE."
+hasExtractedLicensingInfos:
+- extractedText: |-
+    /*
+     * (c) Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Hewlett-Packard Development Company, LP
+     * All rights reserved.
+     *
+     * Redistribution and use in source and binary forms, with or without
+     * modification, are permitted provided that the following conditions
+     * are met:
+     * 1. Redistributions of source code must retain the above copyright
+     *    notice, this list of conditions and the following disclaimer.
+     * 2. Redistributions in binary form must reproduce the above copyright
+     *    notice, this list of conditions and the following disclaimer in the
+     *    documentation and/or other materials provided with the distribution.
+     * 3. The name of the author may not be used to endorse or promote products
+     *    derived from this software without specific prior written permission.
+     *
+     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+    */
+  licenseId: LicenseRef-1
+- extractedText: "This package includes the GRDDL parser developed by Hewlett Packard
+    under the following license:\n� Copyright 2007 Hewlett-Packard Development Company,
+    LP\n\nRedistribution and use in source and binary forms, with or without modification,
+    are permitted provided that the following conditions are met: \n\nRedistributions
+    of source code must retain the above copyright notice, this list of conditions
+    and the following disclaimer. \nRedistributions in binary form must reproduce
+    the above copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the distribution. \nThe
+    name of the author may not be used to endorse or promote products derived from
+    this software without specific prior written permission. \nTHIS SOFTWARE IS PROVIDED
+    BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
+    NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+    OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+    OF THE POSSIBILITY OF SUCH DAMAGE."
+  licenseId: LicenseRef-2
+- extractedText: |-
+    /*
+     * (c) Copyright 2009 University of Bristol
+     * All rights reserved.
+     *
+     * Redistribution and use in source and binary forms, with or without
+     * modification, are permitted provided that the following conditions
+     * are met:
+     * 1. Redistributions of source code must retain the above copyright
+     *    notice, this list of conditions and the following disclaimer.
+     * 2. Redistributions in binary form must reproduce the above copyright
+     *    notice, this list of conditions and the following disclaimer in the
+     *    documentation and/or other materials provided with the distribution.
+     * 3. The name of the author may not be used to endorse or promote products
+     *    derived from this software without specific prior written permission.
+     *
+     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+    */
+  licenseId: LicenseRef-4
+- comment: The beerware license has a couple of other standard variants.
+  extractedText: |-
+    "THE BEER-WARE LICENSE" (Revision 42):
+    phk@FreeBSD.ORG wrote this file. As long as you retain this notice you
+    can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return Poul-Henning Kamp
+  licenseId: LicenseRef-Beerware-4.2
+  name: Beer-Ware License (Version 42)
+  seeAlsos:
+  - http://people.freebsd.org/~phk/
+- comment: This is tye CyperNeko License
+  extractedText: "The CyberNeko Software License, Version 1.0\n\n \n(C) Copyright
+    2002-2005, Andy Clark.  All rights reserved.\n \nRedistribution and use in source
+    and binary forms, with or without\nmodification, are permitted provided that the
+    following conditions\nare met:\n\n1. Redistributions of source code must retain
+    the above copyright\n   notice, this list of conditions and the following disclaimer.
+    \n\n2. Redistributions in binary form must reproduce the above copyright\n   notice,
+    this list of conditions and the following disclaimer in\n   the documentation
+    and/or other materials provided with the\n   distribution.\n\n3. The end-user
+    documentation included with the redistribution,\n   if any, must include the following
+    acknowledgment:  \n     \"This product includes software developed by Andy Clark.\"\n
+    \  Alternately, this acknowledgment may appear in the software itself,\n   if
+    and wherever such third-party acknowledgments normally appear.\n\n4. The names
+    \"CyberNeko\" and \"NekoHTML\" must not be used to endorse\n   or promote products
+    derived from this software without prior \n   written permission. For written
+    permission, please contact \n   andyc@cyberneko.net.\n\n5. Products derived from
+    this software may not be called \"CyberNeko\",\n   nor may \"CyberNeko\" appear
+    in their name, without prior written\n   permission of the author.\n\nTHIS SOFTWARE
+    IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED\nWARRANTIES, INCLUDING, BUT
+    NOT LIMITED TO, THE IMPLIED WARRANTIES\nOF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE\nDISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS\nBE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, \nOR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT \nOF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR \nBUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, \nWHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+    NEGLIGENCE \nOR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+    \nEVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+  licenseId: LicenseRef-3
+  name: CyberNeko License
+  seeAlsos:
+  - http://people.apache.org/~andyc/neko/LICENSE
+  - http://justasample.url.com
+name: SPDX-Tools-v2.0
+packages:
+- SPDXID: SPDXRef-Package
+  annotations:
+  - annotationDate: "2011-01-29T18:30:22Z"
+    annotationType: OTHER
+    annotator: 'Person: Package Commenter'
+    comment: Package level annotation
+  attributionTexts:
+  - The GNU C Library is free software.  See the file COPYING.LIB for copying conditions,
+    and LICENSES for notices about a few contributions that require these additional
+    notices to be distributed.  License copyright years may be listed using range
+    notation, e.g., 1996-2015, indicating that every year in the range, inclusive,
+    is a copyrightable year that would otherwise be listed individually.
+  checksums:
+  - algorithm: MD5
+    checksumValue: 624c1abb3664f4b35547e7c73864ad24
+  - algorithm: SHA1
+    checksumValue: 85ed0817af83a24ad8da68c2b5094de69833983c
+  - algorithm: SHA256
+    checksumValue: 11b6d3ee554eedf79299905a98f9b9a04e498210b59f15094c916c91d150efcd
+  copyrightText: Copyright 2008-2010 John Smith
+  description: The GNU C Library defines functions that are specified by the ISO C
+    standard, as well as additional features specific to POSIX and other derivatives
+    of the Unix operating system, and extensions specific to GNU systems.
+  downloadLocation: http://ftp.gnu.org/gnu/glibc/glibc-ports-2.15.tar.gz
+  externalRefs:
+  - comment: ""
+    referenceCategory: SECURITY
+    referenceLocator: cpe:2.3:a:pivotal_software:spring_framework:4.1.0:*:*:*:*:*:*:*
+    referenceType: cpe23Type
+  - comment: This is the external ref for Acme
+    referenceCategory: OTHER
+    referenceLocator: acmecorp/acmenator/4.1.3-alpha
+    referenceType: http://spdx.org/spdxdocs/spdx-example-444504E0-4F89-41D3-9A0C-0305E82C3301#LocationRef-acmeforge
+  filesAnalyzed: true
+  homepage: http://ftp.gnu.org/gnu/glibc
+  licenseComments: The license for this project changed with the release of version
+    x.y.  The version of the project included here post-dates the license change.
+  licenseConcluded: (LGPL-2.0-only OR LicenseRef-3)
+  licenseDeclared: (LGPL-2.0-only AND LicenseRef-3)
+  licenseInfoFromFiles:
+  - GPL-2.0-only
+  - LicenseRef-2
+  - LicenseRef-1
+  name: glibc
+  originator: 'Organization: ExampleCodeInspect (contact@example.com)'
+  packageFileName: glibc-2.11.1.tar.gz
+  packageVerificationCode:
+    packageVerificationCodeExcludedFiles:
+    - ./package.spdx
+    packageVerificationCodeValue: d6a770ba38583ed4bb4525bd96e50461655d2758
+  sourceInfo: uses glibc-2_11-branch from git://sourceware.org/git/glibc.git.
+  summary: GNU C library.
+  supplier: 'Person: Jane Doe (jane.doe@example.com)'
+  versionInfo: 2.11.1
+- SPDXID: SPDXRef-fromDoap-1
+  copyrightText: NOASSERTION
+  downloadLocation: NOASSERTION
+  homepage: http://commons.apache.org/proper/commons-lang/
+  licenseConcluded: NOASSERTION
+  licenseDeclared: NOASSERTION
+  name: Apache Commons Lang
+- SPDXID: SPDXRef-fromDoap-0
+  copyrightText: NOASSERTION
+  downloadLocation: https://search.maven.org/remotecontent?filepath=org/apache/jena/apache-jena/3.12.0/apache-jena-3.12.0.tar.gz
+  externalRefs:
+  - comment: ""
+    referenceCategory: PACKAGE_MANAGER
+    referenceLocator: pkg:maven/org.apache.jena/apache-jena@3.12.0
+    referenceType: purl
+  homepage: http://www.openjena.org/
+  licenseConcluded: NOASSERTION
+  licenseDeclared: NOASSERTION
+  name: Jena
+  versionInfo: 3.12.0
+- SPDXID: SPDXRef-Saxon
+  checksums:
+  - algorithm: SHA1
+    checksumValue: 85ed0817af83a24ad8da68c2b5094de69833983c
+  copyrightText: Copyright Saxonica Ltd
+  description: The Saxon package is a collection of tools for processing XML documents.
+  downloadLocation: https://sourceforge.net/projects/saxon/files/Saxon-B/8.8.0.7/saxonb8-8-0-7j.zip/download
+  homepage: http://saxon.sourceforge.net/
+  licenseComments: Other versions available for a commercial license
+  licenseConcluded: MPL-1.0
+  licenseDeclared: MPL-1.0
+  name: Saxon
+  packageFileName: saxonB-8.8.zip
+  versionInfo: "8.8"
+- SPDXID: SPDXRef-CentOS-7
+  builtDate: "2021-09-15T02:38:00Z"
+  copyrightText: NOASSERTION
+  description: The CentOS container used to run the application.
+  downloadLocation: NOASSERTION
+  homepage: https://www.centos.org/
+  name: centos
+  packageFileName: saxonB-8.8.zip
+  primaryPackagePurpose: CONTAINER
+  releaseDate: "2021-10-15T02:38:00Z"
+  validUntilDate: "2022-10-15T02:38:00Z"
+  versionInfo: centos7.9.2009
+relationships:
+- comment: A relationship comment
+  relatedSpdxElement: SPDXRef-Package
+  relationshipType: CONTAINS
+  spdxElementId: SPDXRef-DOCUMENT
+- relatedSpdxElement: DocumentRef-spdx-tool-1.2:SPDXRef-ToolsElement
+  relationshipType: COPY_OF
+  spdxElementId: SPDXRef-DOCUMENT
+- relatedSpdxElement: SPDXRef-File
+  relationshipType: DESCRIBES
+  spdxElementId: SPDXRef-DOCUMENT
+- relatedSpdxElement: SPDXRef-Package
+  relationshipType: DESCRIBES
+  spdxElementId: SPDXRef-DOCUMENT
+- relatedSpdxElement: SPDXRef-JenaLib
+  relationshipType: CONTAINS
+  spdxElementId: SPDXRef-Package
+- relatedSpdxElement: SPDXRef-Saxon
+  relationshipType: DYNAMIC_LINK
+  spdxElementId: SPDXRef-Package
+- relatedSpdxElement: NOASSERTION
+  relationshipType: GENERATED_FROM
+  spdxElementId: SPDXRef-CommonsLangSrc
+- relatedSpdxElement: SPDXRef-Package
+  relationshipType: CONTAINS
+  spdxElementId: SPDXRef-JenaLib
+- relatedSpdxElement: SPDXRef-fromDoap-0
+  relationshipType: GENERATED_FROM
+  spdxElementId: SPDXRef-File
+snippets:
+- SPDXID: SPDXRef-Snippet
+  comment: This snippet was identified as significant and highlighted in this Apache-2.0
+    file, when a commercial scanner identified it as being derived from file foo.c
+    in package xyz which is licensed under GPL-2.0.
+  copyrightText: Copyright 2008-2010 John Smith
+  licenseComments: The concluded license was taken from package xyz, from which the
+    snippet was copied into the current file. The concluded license information was
+    found in the COPYING.txt file in package xyz.
+  licenseConcluded: GPL-2.0-only
+  licenseInfoInSnippets:
+  - GPL-2.0-only
+  name: from linux kernel
+  ranges:
+  - endPointer:
+      offset: 420
+      reference: SPDXRef-DoapSource
+    startPointer:
+      offset: 310
+      reference: SPDXRef-DoapSource
+  - endPointer:
+      lineNumber: 23
+      reference: SPDXRef-DoapSource
+    startPointer:
+      lineNumber: 5
+      reference: SPDXRef-DoapSource
+  snippetFromFile: SPDXRef-DoapSource
+spdxVersion: SPDX-2.2
diff --git a/spdx/common/package.go b/spdx/common/package.go
index e0635df..de5a075 100644
--- a/spdx/common/package.go
+++ b/spdx/common/package.go
@@ -101,5 +101,5 @@ type PackageVerificationCode struct {
 	// Spec also allows specifying files to exclude from the
 	// verification code algorithm; intended to enable exclusion of
 	// the SPDX document file itself.
-	ExcludedFiles []string `json:"packageVerificationCodeExcludedFiles"`
+	ExcludedFiles []string `json:"packageVerificationCodeExcludedFiles,omitempty"`
 }
diff --git a/spdx/v2_3/annotation.go b/spdx/v2_3/annotation.go
index 756aea1..121e995 100644
--- a/spdx/v2_3/annotation.go
+++ b/spdx/v2_3/annotation.go
@@ -21,7 +21,7 @@ type Annotation struct {
 	// 12.4: SPDX Identifier Reference
 	// Cardinality: conditional (mandatory, one) if there is an Annotation
 	// This field is not used in hierarchical data formats where the referenced element is clear, such as JSON or YAML.
-	AnnotationSPDXIdentifier common.DocElementID `json:"-"`
+	AnnotationSPDXIdentifier common.DocElementID `json:"-" yaml:"-"`
 
 	// 12.5: Annotation Comment
 	// Cardinality: conditional (mandatory, one) if there is an Annotation
diff --git a/spdx/v2_3/document.go b/spdx/v2_3/document.go
index f8b5e23..32fdb8d 100644
--- a/spdx/v2_3/document.go
+++ b/spdx/v2_3/document.go
@@ -61,5 +61,5 @@ type Document struct {
 	Snippets      []Snippet       `json:"snippets,omitempty"`
 
 	// DEPRECATED in version 2.0 of spec
-	Reviews []*Review `json:"reviews,omitempty"`
+	Reviews []*Review `json:"-" yaml:"-"`
 }
diff --git a/spdx/v2_3/file.go b/spdx/v2_3/file.go
index 3d6e71e..1dd59fa 100644
--- a/spdx/v2_3/file.go
+++ b/spdx/v2_3/file.go
@@ -68,7 +68,7 @@ type File struct {
 	// Note that Snippets could be defined in a different Document! However,
 	// the only ones that _THIS_ document can contain are this ones that are
 	// defined here -- so this should just be an ElementID.
-	Snippets map[common.ElementID]*Snippet `json:"-"`
+	Snippets map[common.ElementID]*Snippet `json:"-" yaml:"-"`
 
 	Annotations []Annotation `json:"annotations,omitempty"`
 }
diff --git a/spdx/v2_3/package.go b/spdx/v2_3/package.go
index a382268..7df331d 100644
--- a/spdx/v2_3/package.go
+++ b/spdx/v2_3/package.go
@@ -9,7 +9,7 @@ type Package struct {
 	// NOT PART OF SPEC
 	// flag: does this "package" contain files that were in fact "unpackaged",
 	// e.g. included directly in the Document without being in a Package?
-	IsUnpackaged bool `json:"-"`
+	IsUnpackaged bool `json:"-" yaml:"-"`
 
 	// 7.1: Package Name
 	// Cardinality: mandatory, one
@@ -45,7 +45,7 @@ type Package struct {
 	// Cardinality: optional, one; default value is "true" if omitted
 	FilesAnalyzed bool `json:"filesAnalyzed,omitempty"`
 	// NOT PART OF SPEC: did FilesAnalyzed tag appear?
-	IsFilesAnalyzedTagPresent bool `json:"-"`
+	IsFilesAnalyzedTagPresent bool `json:"-" yaml:"-"`
 
 	// 7.9: Package Verification Code
 	// Cardinality: if FilesAnalyzed == true must be present, if FilesAnalyzed == false must be omitted
diff --git a/spdx/v2_3/snippet.go b/spdx/v2_3/snippet.go
index 240f8c8..d55a1a9 100644
--- a/spdx/v2_3/snippet.go
+++ b/spdx/v2_3/snippet.go
@@ -44,5 +44,5 @@ type Snippet struct {
 
 	// 9.11: Snippet Attribution Text
 	// Cardinality: optional, one or many
-	SnippetAttributionTexts []string `json:"-"`
+	SnippetAttributionTexts []string `json:"-" yaml:"-"`
 }
diff --git a/yaml/parser.go b/yaml/parser.go
index 1a8f0f6..265a04d 100644
--- a/yaml/parser.go
+++ b/yaml/parser.go
@@ -7,6 +7,7 @@ import (
 	"io"
 
 	"github.com/spdx/tools-golang/spdx/v2_2"
+	"github.com/spdx/tools-golang/spdx/v2_3"
 	"sigs.k8s.io/yaml"
 )
 
@@ -27,3 +28,21 @@ func Load2_2(content io.Reader) (*v2_2.Document, error) {
 
 	return &doc, nil
 }
+
+// Load2_3 takes in an io.Reader and returns an SPDX document.
+func Load2_3(content io.Reader) (*v2_3.Document, error) {
+	// convert io.Reader to a slice of bytes and call the parser
+	buf := new(bytes.Buffer)
+	_, err := buf.ReadFrom(content)
+	if err != nil {
+		return nil, err
+	}
+
+	var doc v2_3.Document
+	err = yaml.Unmarshal(buf.Bytes(), &doc)
+	if err != nil {
+		return nil, err
+	}
+
+	return &doc, nil
+}
diff --git a/yaml/yaml_test.go b/yaml/yaml_v2_2_test.go
index c38b0e1..9d66f5b 100644
--- a/yaml/yaml_test.go
+++ b/yaml/yaml_v2_2_test.go
@@ -27,7 +27,7 @@ func TestLoad2_2(t *testing.T) {
 	}
 
 	// get a copy of the handwritten struct so we don't mutate it on accident
-	handwrittenExample := want
+	handwrittenExample := want2_2
 
 	if cmp.Equal(handwrittenExample, got) {
 		t.Errorf("got incorrect struct after parsing YAML example")
@@ -38,7 +38,7 @@ func TestLoad2_2(t *testing.T) {
 func TestWrite2_2(t *testing.T) {
 	w := &bytes.Buffer{}
 	// get a copy of the handwritten struct so we don't mutate it on accident
-	handwrittenExample := want
+	handwrittenExample := want2_2
 	if err := Save2_2(&handwrittenExample, w); err != nil {
 		t.Errorf("Save2_2() error = %v", err.Error())
 		return
@@ -60,7 +60,7 @@ func TestWrite2_2(t *testing.T) {
 // want is handwritten translation of the official example YAML SPDX v2.2 document into a Go struct.
 // We expect that the result of parsing the official document should be this value.
 // We expect that the result of writing this struct should match the official example document.
-var want = v2_2.Document{
+var want2_2 = v2_2.Document{
 	DataLicense:       "CC0-1.0",
 	SPDXVersion:       "SPDX-2.2",
 	SPDXIdentifier:    "SPDXRef-DOCUMENT",
diff --git a/yaml/yaml_v2_3_test.go b/yaml/yaml_v2_3_test.go
new file mode 100644
index 0000000..0271150
--- /dev/null
+++ b/yaml/yaml_v2_3_test.go
@@ -0,0 +1,492 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+
+package spdx_yaml
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+
+	"github.com/spdx/tools-golang/spdx/common"
+	"github.com/spdx/tools-golang/spdx/v2_3"
+)
+
+var update = *flag.Bool("update-snapshots", false, "update the example snapshot")
+
+func TestLoad2_3(t *testing.T) {
+	fileName := "../examples/sample-docs/yaml/SPDXYAMLExample-2.3.spdx.yaml"
+
+	if update {
+		f, err := os.OpenFile(fileName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+		if err != nil {
+			t.Errorf("unable to write SPDX 2.3 example to YAML: %v", err)
+		}
+		err = Save2_3(&want2_3, f)
+		if err != nil {
+			t.Errorf("unable to serialize SPDX 2.3 example to YAML: %v", err)
+		}
+	}
+
+	file, err := os.Open(fileName)
+	if err != nil {
+		panic(fmt.Errorf("error opening File: %s", err))
+	}
+
+	got, err := Load2_3(file)
+	if err != nil {
+		t.Errorf("yaml.parser.Load2_3() error = %v", err)
+		return
+	}
+
+	// get a copy of the handwritten struct so we don't mutate it on accident
+	handwrittenExample := want2_3
+
+	if cmp.Equal(handwrittenExample, got) {
+		t.Errorf("got incorrect struct after parsing YAML example")
+		return
+	}
+}
+
+func TestWrite2_3(t *testing.T) {
+	w := &bytes.Buffer{}
+	// get a copy of the handwritten struct so we don't mutate it on accident
+	handwrittenExample := want2_3
+	if err := Save2_3(&handwrittenExample, w); err != nil {
+		t.Errorf("Save2_3() error = %v", err.Error())
+		return
+	}
+
+	// we should be able to parse what the writer wrote, and it should be identical to the original handwritten struct
+	parsedDoc, err := Load2_3(bytes.NewReader(w.Bytes()))
+	if err != nil {
+		t.Errorf("failed to parse written document: %v", err.Error())
+		return
+	}
+
+	if cmp.Equal(handwrittenExample, parsedDoc) {
+		t.Errorf("got incorrect struct after writing and re-parsing YAML example")
+		return
+	}
+}
+
+// want is handwritten translation of the official example YAML SPDX v2.2 document into a Go struct.
+// We expect that the result of parsing the official document should be this value.
+// We expect that the result of writing this struct should match the official example document.
+var want2_3 = v2_3.Document{
+	DataLicense:       "CC0-1.0",
+	SPDXVersion:       "SPDX-2.2",
+	SPDXIdentifier:    "SPDXRef-DOCUMENT",
+	DocumentName:      "SPDX-Tools-v2.0",
+	DocumentNamespace: "http://spdx.org/spdxdocs/spdx-example-444504E0-4F89-41D3-9A0C-0305E82C3301",
+	CreationInfo: &v2_3.CreationInfo{
+		LicenseListVersion: "3.9",
+		Creators: []common.Creator{
+			{CreatorType: "Tool", Creator: "LicenseFind-1.0"},
+			{CreatorType: "Organization", Creator: "ExampleCodeInspect ()"},
+			{CreatorType: "Person", Creator: "Jane Doe ()"},
+		},
+		Created:        "2010-01-29T18:30:22Z",
+		CreatorComment: "This package has been shipped in source and binary form.\nThe binaries were created with gcc 4.5.1 and expect to link to\ncompatible system run time libraries.",
+	},
+	DocumentComment: "This document was created using SPDX 2.0 using licenses from the web site.",
+	ExternalDocumentReferences: []v2_3.ExternalDocumentRef{
+		{
+			DocumentRefID: "DocumentRef-spdx-tool-1.2",
+			URI:           "http://spdx.org/spdxdocs/spdx-tools-v1.2-3F2504E0-4F89-41D3-9A0C-0305E82C3301",
+			Checksum: common.Checksum{
+				Algorithm: common.SHA1,
+				Value:     "d6a770ba38583ed4bb4525bd96e50461655d2759",
+			},
+		},
+	},
+	OtherLicenses: []*v2_3.OtherLicense{
+		{
+			LicenseIdentifier: "LicenseRef-1",
+			ExtractedText:     "/*\n * (c) Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Hewlett-Packard Development Company, LP\n * All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions\n * are met:\n * 1. Redistributions of source code must retain the above copyright\n *    notice, this list of conditions and the following disclaimer.\n * 2. Redistributions in binary form must reproduce the above copyright\n *    notice, this list of conditions and the following disclaimer in the\n *    documentation and/or other materials provided with the distribution.\n * 3. The name of the author may not be used to endorse or promote products\n *    derived from this software without specific prior written permission.\n *\n * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\n * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n*/",
+		},
+		{
+			LicenseIdentifier: "LicenseRef-2",
+			ExtractedText:     "This package includes the GRDDL parser developed by Hewlett Packard under the following license:\n� Copyright 2007 Hewlett-Packard Development Company, LP\n\nRedistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: \n\nRedistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. \nRedistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. \nThe name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. \nTHIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.",
+		},
+		{
+			LicenseIdentifier: "LicenseRef-4",
+			ExtractedText:     "/*\n * (c) Copyright 2009 University of Bristol\n * All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions\n * are met:\n * 1. Redistributions of source code must retain the above copyright\n *    notice, this list of conditions and the following disclaimer.\n * 2. Redistributions in binary form must reproduce the above copyright\n *    notice, this list of conditions and the following disclaimer in the\n *    documentation and/or other materials provided with the distribution.\n * 3. The name of the author may not be used to endorse or promote products\n *    derived from this software without specific prior written permission.\n *\n * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\n * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n*/",
+		},
+		{
+			LicenseIdentifier:      "LicenseRef-Beerware-4.2",
+			ExtractedText:          "\"THE BEER-WARE LICENSE\" (Revision 42):\nphk@FreeBSD.ORG wrote this file. As long as you retain this notice you\ncan do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return Poul-Henning Kamp",
+			LicenseComment:         "The beerware license has a couple of other standard variants.",
+			LicenseName:            "Beer-Ware License (Version 42)",
+			LicenseCrossReferences: []string{"http://people.freebsd.org/~phk/"},
+		},
+		{
+			LicenseIdentifier: "LicenseRef-3",
+			ExtractedText:     "The CyberNeko Software License, Version 1.0\n\n \n(C) Copyright 2002-2005, Andy Clark.  All rights reserved.\n \nRedistribution and use in source and binary forms, with or without\nmodification, are permitted provided that the following conditions\nare met:\n\n1. Redistributions of source code must retain the above copyright\n   notice, this list of conditions and the following disclaimer. \n\n2. Redistributions in binary form must reproduce the above copyright\n   notice, this list of conditions and the following disclaimer in\n   the documentation and/or other materials provided with the\n   distribution.\n\n3. The end-user documentation included with the redistribution,\n   if any, must include the following acknowledgment:  \n     \"This product includes software developed by Andy Clark.\"\n   Alternately, this acknowledgment may appear in the software itself,\n   if and wherever such third-party acknowledgments normally appear.\n\n4. The names \"CyberNeko\" and \"NekoHTML\" must not be used to endorse\n   or promote products derived from this software without prior \n   written permission. For written permission, please contact \n   andyc@cyberneko.net.\n\n5. Products derived from this software may not be called \"CyberNeko\",\n   nor may \"CyberNeko\" appear in their name, without prior written\n   permission of the author.\n\nTHIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED\nWARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\nOF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\nDISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS\nBE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, \nOR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT \nOF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR \nBUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, \nWHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE \nOR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, \nEVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.",
+			LicenseName:       "CyberNeko License",
+			LicenseCrossReferences: []string{
+				"http://people.apache.org/~andyc/neko/LICENSE",
+				"http://justasample.url.com",
+			},
+			LicenseComment: "This is tye CyperNeko License",
+		},
+	},
+	Annotations: []*v2_3.Annotation{
+		{
+			Annotator: common.Annotator{
+				Annotator:     "Jane Doe ()",
+				AnnotatorType: "Person",
+			},
+			AnnotationDate:    "2010-01-29T18:30:22Z",
+			AnnotationType:    "OTHER",
+			AnnotationComment: "Document level annotation",
+		},
+		{
+			Annotator: common.Annotator{
+				Annotator:     "Joe Reviewer",
+				AnnotatorType: "Person",
+			},
+			AnnotationDate:    "2010-02-10T00:00:00Z",
+			AnnotationType:    "REVIEW",
+			AnnotationComment: "This is just an example.  Some of the non-standard licenses look like they are actually BSD 3 clause licenses",
+		},
+		{
+			Annotator: common.Annotator{
+				Annotator:     "Suzanne Reviewer",
+				AnnotatorType: "Person",
+			},
+			AnnotationDate:    "2011-03-13T00:00:00Z",
+			AnnotationType:    "REVIEW",
+			AnnotationComment: "Another example reviewer.",
+		},
+	},
+	Packages: []*v2_3.Package{
+		{
+			PackageName:           "glibc",
+			PackageSPDXIdentifier: "SPDXRef-Package",
+			PackageVersion:        "2.11.1",
+			PackageFileName:       "glibc-2.11.1.tar.gz",
+			PackageSupplier: &common.Supplier{
+				Supplier:     "Jane Doe (jane.doe@example.com)",
+				SupplierType: "Person",
+			},
+			PackageOriginator: &common.Originator{
+				Originator:     "ExampleCodeInspect (contact@example.com)",
+				OriginatorType: "Organization",
+			},
+			PackageDownloadLocation: "http://ftp.gnu.org/gnu/glibc/glibc-ports-2.15.tar.gz",
+			FilesAnalyzed:           true,
+			PackageVerificationCode: &common.PackageVerificationCode{
+				Value:         "d6a770ba38583ed4bb4525bd96e50461655d2758",
+				ExcludedFiles: []string{"./package.spdx"},
+			},
+			PackageChecksums: []common.Checksum{
+				{
+					Algorithm: "MD5",
+					Value:     "624c1abb3664f4b35547e7c73864ad24",
+				},
+				{
+					Algorithm: "SHA1",
+					Value:     "85ed0817af83a24ad8da68c2b5094de69833983c",
+				},
+				{
+					Algorithm: "SHA256",
+					Value:     "11b6d3ee554eedf79299905a98f9b9a04e498210b59f15094c916c91d150efcd",
+				},
+			},
+			PackageHomePage:         "http://ftp.gnu.org/gnu/glibc",
+			PackageSourceInfo:       "uses glibc-2_11-branch from git://sourceware.org/git/glibc.git.",
+			PackageLicenseConcluded: "(LGPL-2.0-only OR LicenseRef-3)",
+			PackageLicenseInfoFromFiles: []string{
+				"GPL-2.0-only",
+				"LicenseRef-2",
+				"LicenseRef-1",
+			},
+			PackageLicenseDeclared: "(LGPL-2.0-only AND LicenseRef-3)",
+			PackageLicenseComments: "The license for this project changed with the release of version x.y.  The version of the project included here post-dates the license change.",
+			PackageCopyrightText:   "Copyright 2008-2010 John Smith",
+			PackageSummary:         "GNU C library.",
+			PackageDescription:     "The GNU C Library defines functions that are specified by the ISO C standard, as well as additional features specific to POSIX and other derivatives of the Unix operating system, and extensions specific to GNU systems.",
+			PackageComment:         "",
+			PackageExternalReferences: []*v2_3.PackageExternalReference{
+				{
+					Category: "SECURITY",
+					RefType:  "cpe23Type",
+					Locator:  "cpe:2.3:a:pivotal_software:spring_framework:4.1.0:*:*:*:*:*:*:*",
+				},
+				{
+					Category:           "OTHER",
+					RefType:            "http://spdx.org/spdxdocs/spdx-example-444504E0-4F89-41D3-9A0C-0305E82C3301#LocationRef-acmeforge",
+					Locator:            "acmecorp/acmenator/4.1.3-alpha",
+					ExternalRefComment: "This is the external ref for Acme",
+				},
+			},
+			PackageAttributionTexts: []string{
+				"The GNU C Library is free software.  See the file COPYING.LIB for copying conditions, and LICENSES for notices about a few contributions that require these additional notices to be distributed.  License copyright years may be listed using range notation, e.g., 1996-2015, indicating that every year in the range, inclusive, is a copyrightable year that would otherwise be listed individually.",
+			},
+			Files: nil,
+			Annotations: []v2_3.Annotation{
+				{
+					Annotator: common.Annotator{
+						Annotator:     "Package Commenter",
+						AnnotatorType: "Person",
+					},
+					AnnotationDate:    "2011-01-29T18:30:22Z",
+					AnnotationType:    "OTHER",
+					AnnotationComment: "Package level annotation",
+				},
+			},
+		},
+		{
+			PackageSPDXIdentifier:   "SPDXRef-fromDoap-1",
+			PackageCopyrightText:    "NOASSERTION",
+			PackageDownloadLocation: "NOASSERTION",
+			FilesAnalyzed:           false,
+			PackageHomePage:         "http://commons.apache.org/proper/commons-lang/",
+			PackageLicenseConcluded: "NOASSERTION",
+			PackageLicenseDeclared:  "NOASSERTION",
+			PackageName:             "Apache Commons Lang",
+		},
+		{
+			PackageName:             "Jena",
+			PackageSPDXIdentifier:   "SPDXRef-fromDoap-0",
+			PackageCopyrightText:    "NOASSERTION",
+			PackageDownloadLocation: "https://search.maven.org/remotecontent?filepath=org/apache/jena/apache-jena/3.12.0/apache-jena-3.12.0.tar.gz",
+			PackageExternalReferences: []*v2_3.PackageExternalReference{
+				{
+					Category: "PACKAGE_MANAGER",
+					RefType:  "purl",
+					Locator:  "pkg:maven/org.apache.jena/apache-jena@3.12.0",
+				},
+			},
+			FilesAnalyzed:           false,
+			PackageHomePage:         "http://www.openjena.org/",
+			PackageLicenseConcluded: "NOASSERTION",
+			PackageLicenseDeclared:  "NOASSERTION",
+			PackageVersion:          "3.12.0",
+		},
+		{
+			PackageSPDXIdentifier: "SPDXRef-Saxon",
+			PackageChecksums: []common.Checksum{
+				{
+					Algorithm: "SHA1",
+					Value:     "85ed0817af83a24ad8da68c2b5094de69833983c",
+				},
+			},
+			PackageCopyrightText:    "Copyright Saxonica Ltd",
+			PackageDescription:      "The Saxon package is a collection of tools for processing XML documents.",
+			PackageDownloadLocation: "https://sourceforge.net/projects/saxon/files/Saxon-B/8.8.0.7/saxonb8-8-0-7j.zip/download",
+			FilesAnalyzed:           false,
+			PackageHomePage:         "http://saxon.sourceforge.net/",
+			PackageLicenseComments:  "Other versions available for a commercial license",
+			PackageLicenseConcluded: "MPL-1.0",
+			PackageLicenseDeclared:  "MPL-1.0",
+			PackageName:             "Saxon",
+			PackageFileName:         "saxonB-8.8.zip",
+			PackageVersion:          "8.8",
+		},
+		{
+			PrimaryPackagePurpose:   "CONTAINER",
+			PackageSPDXIdentifier:   "SPDXRef-CentOS-7",
+			PackageCopyrightText:    "NOASSERTION",
+			PackageDescription:      "The CentOS container used to run the application.",
+			PackageDownloadLocation: "NOASSERTION",
+			FilesAnalyzed:           false,
+			PackageHomePage:         "https://www.centos.org/",
+			PackageName:             "centos",
+			PackageFileName:         "saxonB-8.8.zip",
+			PackageVersion:          "centos7.9.2009",
+			BuiltDate:               "2021-09-15T02:38:00Z",
+			ValidUntilDate:          "2022-10-15T02:38:00Z",
+			ReleaseDate:             "2021-10-15T02:38:00Z",
+		},
+	},
+	Files: []*v2_3.File{
+		{
+			FileName:           "./src/org/spdx/parser/DOAPProject.java",
+			FileSPDXIdentifier: "SPDXRef-DoapSource",
+			FileTypes: []string{
+				"SOURCE",
+			},
+			Checksums: []common.Checksum{
+				{
+					Algorithm: "SHA1",
+					Value:     "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12",
+				},
+			},
+			LicenseConcluded: "Apache-2.0",
+			LicenseInfoInFiles: []string{
+				"Apache-2.0",
+			},
+			FileCopyrightText: "Copyright 2010, 2011 Source Auditor Inc.",
+			FileContributors: []string{
+				"Protecode Inc.",
+				"SPDX Technical Team Members",
+				"Open Logic Inc.",
+				"Source Auditor Inc.",
+				"Black Duck Software In.c",
+			},
+		},
+		{
+			FileSPDXIdentifier: "SPDXRef-CommonsLangSrc",
+			Checksums: []common.Checksum{
+				{
+					Algorithm: "SHA1",
+					Value:     "c2b4e1c67a2d28fced849ee1bb76e7391b93f125",
+				},
+			},
+			FileComment:        "This file is used by Jena",
+			FileCopyrightText:  "Copyright 2001-2011 The Apache Software Foundation",
+			FileContributors:   []string{"Apache Software Foundation"},
+			FileName:           "./lib-source/commons-lang3-3.1-sources.jar",
+			FileTypes:          []string{"ARCHIVE"},
+			LicenseConcluded:   "Apache-2.0",
+			LicenseInfoInFiles: []string{"Apache-2.0"},
+			FileNotice:         "Apache Commons Lang\nCopyright 2001-2011 The Apache Software Foundation\n\nThis product includes software developed by\nThe Apache Software Foundation (http://www.apache.org/).\n\nThis product includes software from the Spring Framework,\nunder the Apache License 2.0 (see: StringUtils.containsWhitespace())",
+		},
+		{
+			FileSPDXIdentifier: "SPDXRef-JenaLib",
+			Checksums: []common.Checksum{
+				{
+					Algorithm: "SHA1",
+					Value:     "3ab4e1c67a2d28fced849ee1bb76e7391b93f125",
+				},
+			},
+			FileComment:        "This file belongs to Jena",
+			FileCopyrightText:  "(c) Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Hewlett-Packard Development Company, LP",
+			FileContributors:   []string{"Apache Software Foundation", "Hewlett Packard Inc."},
+			FileName:           "./lib-source/jena-2.6.3-sources.jar",
+			FileTypes:          []string{"ARCHIVE"},
+			LicenseComments:    "This license is used by Jena",
+			LicenseConcluded:   "LicenseRef-1",
+			LicenseInfoInFiles: []string{"LicenseRef-1"},
+		},
+		{
+			FileSPDXIdentifier: "SPDXRef-File",
+			Annotations: []v2_3.Annotation{
+				{
+					Annotator: common.Annotator{
+						Annotator:     "File Commenter",
+						AnnotatorType: "Person",
+					},
+					AnnotationDate:    "2011-01-29T18:30:22Z",
+					AnnotationType:    "OTHER",
+					AnnotationComment: "File level annotation",
+				},
+			},
+			Checksums: []common.Checksum{
+				{
+					Algorithm: "SHA1",
+					Value:     "d6a770ba38583ed4bb4525bd96e50461655d2758",
+				},
+				{
+					Algorithm: "MD5",
+					Value:     "624c1abb3664f4b35547e7c73864ad24",
+				},
+			},
+			FileComment:        "The concluded license was taken from the package level that the file was included in.\nThis information was found in the COPYING.txt file in the xyz directory.",
+			FileCopyrightText:  "Copyright 2008-2010 John Smith",
+			FileContributors:   []string{"The Regents of the University of California", "Modified by Paul Mundt lethal@linux-sh.org", "IBM Corporation"},
+			FileName:           "./package/foo.c",
+			FileTypes:          []string{"SOURCE"},
+			LicenseComments:    "The concluded license was taken from the package level that the file was included in.",
+			LicenseConcluded:   "(LGPL-2.0-only OR LicenseRef-2)",
+			LicenseInfoInFiles: []string{"GPL-2.0-only", "LicenseRef-2"},
+			FileNotice:         "Copyright (c) 2001 Aaron Lehmann aaroni@vitelus.com\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the �Software�), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: \nThe above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED �AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.",
+		},
+	},
+	Snippets: []v2_3.Snippet{
+		{
+			SnippetSPDXIdentifier:         "SPDXRef-Snippet",
+			SnippetFromFileSPDXIdentifier: "SPDXRef-DoapSource",
+			Ranges: []common.SnippetRange{
+				{
+					StartPointer: common.SnippetRangePointer{
+						Offset:             310,
+						FileSPDXIdentifier: "SPDXRef-DoapSource",
+					},
+					EndPointer: common.SnippetRangePointer{
+						Offset:             420,
+						FileSPDXIdentifier: "SPDXRef-DoapSource",
+					},
+				},
+				{
+					StartPointer: common.SnippetRangePointer{
+						LineNumber:         5,
+						FileSPDXIdentifier: "SPDXRef-DoapSource",
+					},
+					EndPointer: common.SnippetRangePointer{
+						LineNumber:         23,
+						FileSPDXIdentifier: "SPDXRef-DoapSource",
+					},
+				},
+			},
+			SnippetLicenseConcluded: "GPL-2.0-only",
+			LicenseInfoInSnippet:    []string{"GPL-2.0-only"},
+			SnippetLicenseComments:  "The concluded license was taken from package xyz, from which the snippet was copied into the current file. The concluded license information was found in the COPYING.txt file in package xyz.",
+			SnippetCopyrightText:    "Copyright 2008-2010 John Smith",
+			SnippetComment:          "This snippet was identified as significant and highlighted in this Apache-2.0 file, when a commercial scanner identified it as being derived from file foo.c in package xyz which is licensed under GPL-2.0.",
+			SnippetName:             "from linux kernel",
+			SnippetAttributionTexts: []string{"Snippet attribution"},
+		},
+	},
+	Relationships: []*v2_3.Relationship{
+		{
+			RefA:                common.MakeDocElementID("", "DOCUMENT"),
+			RefB:                common.MakeDocElementID("", "Package"),
+			Relationship:        "CONTAINS",
+			RelationshipComment: "A relationship comment",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "DOCUMENT"),
+			RefB:         common.MakeDocElementID("spdx-tool-1.2", "ToolsElement"),
+			Relationship: "COPY_OF",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "DOCUMENT"),
+			RefB:         common.MakeDocElementID("", "File"),
+			Relationship: "DESCRIBES",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "DOCUMENT"),
+			RefB:         common.MakeDocElementID("", "Package"),
+			Relationship: "DESCRIBES",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "Package"),
+			RefB:         common.MakeDocElementID("", "JenaLib"),
+			Relationship: "CONTAINS",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "Package"),
+			RefB:         common.MakeDocElementID("", "Saxon"),
+			Relationship: "DYNAMIC_LINK",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "CommonsLangSrc"),
+			RefB:         common.MakeDocElementSpecial("NOASSERTION"),
+			Relationship: "GENERATED_FROM",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "JenaLib"),
+			RefB:         common.MakeDocElementID("", "Package"),
+			Relationship: "CONTAINS",
+		},
+		{
+			RefA:         common.MakeDocElementID("", "File"),
+			RefB:         common.MakeDocElementID("", "fromDoap-0"),
+			Relationship: "GENERATED_FROM",
+		},
+	},
+	Reviews: []*v2_3.Review{
+		{
+			Reviewer:      "joe@example.com",
+			ReviewerType:  "Person",
+			ReviewDate:    "2021-11-03T05:43:21Z",
+			ReviewComment: "This is a review comment",
+		},
+	},
+}