public static com.google.cloud.tpu.v2.QueuedResource.Guaranteed getDefaultInstance() {
      return DEFAULT_INSTANCE;
    }
<pre>
Optional. Defines the minimum duration of the guarantee. If specified,
the requested resources will only be provisioned if they can be
allocated for at least the given duration.
</pre>

<code>.google.protobuf.Duration min_duration = 1 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResource.java