public com.google.protobuf.Struct.Builder getAnnotationBuilder() {
        bitField0_ |= 0x00000001;
        onChanged();
        return getAnnotationFieldBuilder().getBuilder();
      }
<pre>
The struct format of the actual annotation.
</pre>

<code>.google.protobuf.Struct annotation = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AppPlatformCloudFunctionResponse.java