public Builder setTpu(com.google.cloud.tpu.v2.QueuedResource.Tpu.Builder builderForValue) {
      if (tpuBuilder_ == null) {
        resource_ = builderForValue.build();
        onChanged();
      } else {
        tpuBuilder_.setMessage(builderForValue.build());
      }
      resourceCase_ = 2;
      return this;
    }
<pre>
Optional. Defines a TPU resource.
</pre>

<code>
.google.cloud.tpu.v2.QueuedResource.Tpu tpu = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResource.java