private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vertexai.api.GenericOperationMetadata,
            com.google.cloud.vertexai.api.GenericOperationMetadata.Builder,
            com.google.cloud.vertexai.api.GenericOperationMetadataOrBuilder>
        getGenericMetadataFieldBuilder() {
      if (genericMetadataBuilder_ == null) {
        genericMetadataBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vertexai.api.GenericOperationMetadata,
                com.google.cloud.vertexai.api.GenericOperationMetadata.Builder,
                com.google.cloud.vertexai.api.GenericOperationMetadataOrBuilder>(
                getGenericMetadata(), getParentForChildren(), isClean());
        genericMetadata_ = null;
      }
      return genericMetadataBuilder_;
    }
<pre>
The operation generic information.
</pre>

<code>.google.cloud.vertexai.v1.GenericOperationMetadata generic_metadata = 1;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/UpdateEndpointOperationMetadata.java