public Builder clearStandard() {
      if (standardBuilder_ == null) {
        if (kindCase_ == 2) {
          kindCase_ = 0;
          kind_ = null;
          onChanged();
        }
      } else {
        if (kindCase_ == 2) {
          kindCase_ = 0;
          kind_ = null;
        }
        standardBuilder_.clear();
      }
      return this;
    }
<pre>
A standard reservation.
</pre>

<code>.google.cloud.tpu.v2alpha1.Reservation.Standard standard = 2;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/Reservation.java