public Builder setUsage(com.google.cloud.tpu.v2alpha1.Reservation.Standard.Usage value) {
        if (usageBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          usage_ = value;
        } else {
          usageBuilder_.setMessage(value);
        }
        bitField0_ |= 0x00000010;
        onChanged();
        return this;
      }
<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