public Builder setBestEffort(
        com.google.cloud.tpu.v2alpha1.QueuedResource.BestEffort.Builder builderForValue) {
      if (bestEffortBuilder_ == null) {
        tier_ = builderForValue.build();
        onChanged();
      } else {
        bestEffortBuilder_.setMessage(builderForValue.build());
      }
      tierCase_ = 3;
      return this;
    }
<pre>
The BestEffort tier.
</pre>

<code>.google.cloud.tpu.v2alpha1.QueuedResource.BestEffort best_effort = 3;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResource.java