public Builder clearAnnotation() {
        bitField0_ = (bitField0_ & ~0x00000002);
        annotation_ = null;
        if (annotationBuilder_ != null) {
          annotationBuilder_.dispose();
          annotationBuilder_ = null;
        }
        onChanged();
        return this;
      }
<pre>
The struct format of the actual annotation.
</pre>

<code>.google.protobuf.Struct annotation = 2;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AppPlatformCloudFunctionRequest.java