public sealed class Chunk.Types.AnnotationMetadata : IMessage<Chunk.Types.AnnotationMetadata>, IEquatable<Chunk.Types.AnnotationMetadata>, IDeepCloneable<Chunk.Types.AnnotationMetadata>, IBufferMessage, IMessage
Reference documentation and code samples for the Discovery Engine v1 API class Chunk.Types.AnnotationMetadata.
The annotation metadata includes structured content in the current chunk.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[],[],null,["# Discovery Engine v1 API - Class Chunk.Types.AnnotationMetadata (1.9.0)\n\nVersion latestkeyboard_arrow_down\n\n- [1.9.0 (latest)](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.8.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.8.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.7.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.7.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.6.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.6.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.5.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.5.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.4.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.4.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.3.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.3.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.2.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.2.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.1.0](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.1.0/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata)\n- [1.0.0-beta06](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/1.0.0-beta06/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata) \n\n public sealed class Chunk.Types.AnnotationMetadata : IMessage\u003cChunk.Types.AnnotationMetadata\u003e, IEquatable\u003cChunk.Types.AnnotationMetadata\u003e, IDeepCloneable\u003cChunk.Types.AnnotationMetadata\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Discovery Engine v1 API class Chunk.Types.AnnotationMetadata.\n\nThe annotation metadata includes structured content in the current chunk. \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e Chunk.Types.AnnotationMetadata \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[Chunk](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk)[Types](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types)[AnnotationMetadata](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[Chunk](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk)[Types](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types)[AnnotationMetadata](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[Chunk](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk)[Types](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types)[AnnotationMetadata](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1.Chunk.Types.AnnotationMetadata), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.DiscoveryEngine.V1](/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1/latest/Google.Cloud.DiscoveryEngine.V1)\n\nAssembly\n--------\n\nGoogle.Cloud.DiscoveryEngine.V1.dll\n\nConstructors\n------------\n\n### AnnotationMetadata()\n\n public AnnotationMetadata()\n\n### AnnotationMetadata(AnnotationMetadata)\n\n public AnnotationMetadata(Chunk.Types.AnnotationMetadata other)\n\nProperties\n----------\n\n### ImageId\n\n public string ImageId { get; set; }\n\nOutput only. Image id is provided if the structured content is based on\nan image.\n\n### StructuredContent\n\n public Chunk.Types.StructuredContent StructuredContent { get; set; }\n\nOutput only. The structured content information."]]
