@java.lang.Override
      public final Builder mergeUnknownFields(
          final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.mergeUnknownFields(unknownFields);
      }
<pre>
The current usage of the reservation.
</pre>

<code>.google.cloud.tpu.v2alpha1.Reservation.Standard.Usage usage = 5;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/Reservation.java