@java.lang.Override
    public com.google.cloud.tpu.v2.QueuedResource.QueueingPolicy getDefaultInstanceForType() {
      return DEFAULT_INSTANCE;
    }
<pre>
Optional. An absolute time interval within which resources may be
created.
</pre>

<code>.google.type.Interval valid_interval = 5 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResource.java