private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessageV3
                .alwaysUseFieldBuilders) {
          getVertexFieldBuilder();
        }
      }
<pre>
Union
</pre>

Protobuf type {@code VertexOrBinary}
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java