public Builder mergeStandard(com.google.cloud.tpu.v2alpha1.Reservation.Standard value) {
      if (standardBuilder_ == null) {
        if (kindCase_ == 2
            && kind_ != com.google.cloud.tpu.v2alpha1.Reservation.Standard.getDefaultInstance()) {
          kind_ =
              com.google.cloud.tpu.v2alpha1.Reservation.Standard.newBuilder(
                      (com.google.cloud.tpu.v2alpha1.Reservation.Standard) kind_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          kind_ = value;
        }
        onChanged();
      } else {
        if (kindCase_ == 2) {
          standardBuilder_.mergeFrom(value);
        } else {
          standardBuilder_.setMessage(value);
        }
      }
      kindCase_ = 2;
      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