@SuppressWarnings({"rawtypes"})
  @java.lang.Override
  protected com.google.protobuf.MapFieldReflectionAccessor internalGetMapFieldReflection(
      int number) {
    switch (number) {
      case 24:
        return internalGetLabels();
      case 34:
        return internalGetMetadata();
      default:
        throw new RuntimeException("Invalid map field number: " + number);
    }
  }
<pre>
A TPU instance.
</pre>

Protobuf type {@code google.cloud.tpu.v2.Node}
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/Node.java