public Builder clearNode() {
      bitField0_ = (bitField0_ & ~0x00000004);
      node_ = null;
      if (nodeBuilder_ != null) {
        nodeBuilder_.dispose();
        nodeBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Required. The node.
</pre>

<code>.google.cloud.tpu.v2.Node node = 3 [(.google.api.field_behavior) = REQUIRED];</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/CreateNodeRequest.java