public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
      return com.google.cloud.vision.v1.ProductSearchServiceProto
          .internal_static_google_cloud_vision_v1_BatchOperationMetadata_descriptor;
    }
<pre>
Metadata for the batch operations such as the current state.

This is included in the `metadata` field of the `Operation` returned by the
`GetOperation` call of the `google::longrunning::Operations` service.
</pre>

Protobuf type {@code google.cloud.vision.v1.BatchOperationMetadata}
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/BatchOperationMetadata.java