public Builder clearStartTimingConstraints() {
        startTimingConstraintsCase_ = 0;
        startTimingConstraints_ = null;
        onChanged();
        return this;
      }
<pre>
Defines the policy of the QueuedRequest.
</pre>

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