public com.google.cloud.visionai.v1.OperationMetadata getOperationMetadata() {
      if (operationMetadataBuilder_ == null) {
        return operationMetadata_ == null
            ? com.google.cloud.visionai.v1.OperationMetadata.getDefaultInstance()
            : operationMetadata_;
      } else {
        return operationMetadataBuilder_.getMessage();
      }
    }
<pre>
Common metadata of the long-running operation.
</pre>

<code>.google.cloud.visionai.v1.OperationMetadata operation_metadata = 1;</code>

@return The operationMetadata.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CreateIndexEndpointMetadata.java