public Builder mergePrivateClusterConfig(
        com.google.cloud.workstations.v1beta.WorkstationCluster.PrivateClusterConfig value) {
      if (privateClusterConfigBuilder_ == null) {
        if (((bitField0_ & 0x00002000) != 0)
            && privateClusterConfig_ != null
            && privateClusterConfig_
                != com.google.cloud.workstations.v1beta.WorkstationCluster.PrivateClusterConfig
                    .getDefaultInstance()) {
          getPrivateClusterConfigBuilder().mergeFrom(value);
        } else {
          privateClusterConfig_ = value;
        }
      } else {
        privateClusterConfigBuilder_.mergeFrom(value);
      }
      if (privateClusterConfig_ != null) {
        bitField0_ |= 0x00002000;
        onChanged();
      }
      return this;
    }
<pre>
Optional. Configuration for private workstation cluster.
</pre>

<code>
.google.cloud.workstations.v1beta.WorkstationCluster.PrivateClusterConfig private_cluster_config = 12 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationCluster.java