public Builder setNode(com.google.cloud.tpu.v1.Node value) {
      if (nodeBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        node_ = value;
      } else {
        nodeBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
<pre>
Required. The node.
</pre>

<code>.google.cloud.tpu.v1.Node node = 3 [(.google.api.field_behavior) = REQUIRED];</code>
java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/CreateNodeRequest.java