private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
          getMinDurationFieldBuilder();
        }
      }
<pre>
Guaranteed tier definition.
</pre>

Protobuf type {@code google.cloud.tpu.v2alpha1.QueuedResource.Guaranteed}
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResource.java