public Builder clearNode() {
          bitField0_ = (bitField0_ & ~0x00000008);
          node_ = null;
          if (nodeBuilder_ != null) {
            nodeBuilder_.dispose();
            nodeBuilder_ = null;
          }
          onChanged();
          return this;
        }
<pre>
Required. The node.
</pre>

<code>.google.cloud.tpu.v2.Node node = 4 [(.google.api.field_behavior) = REQUIRED];
</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResource.java