private void maybeForceBuilderInitialization() {
      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
        getSubmitTimeFieldBuilder();
        getEndTimeFieldBuilder();
      }
    }
<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.v1p4beta1.BatchOperationMetadata}
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/BatchOperationMetadata.java