public Builder mergeStretchedClusterConfig(
        com.google.cloud.vmwareengine.v1.StretchedClusterConfig value) {
      if (stretchedClusterConfigBuilder_ == null) {
        if (((bitField0_ & 0x00000100) != 0)
            && stretchedClusterConfig_ != null
            && stretchedClusterConfig_
                != com.google.cloud.vmwareengine.v1.StretchedClusterConfig.getDefaultInstance()) {
          getStretchedClusterConfigBuilder().mergeFrom(value);
        } else {
          stretchedClusterConfig_ = value;
        }
      } else {
        stretchedClusterConfigBuilder_.mergeFrom(value);
      }
      if (stretchedClusterConfig_ != null) {
        bitField0_ |= 0x00000100;
        onChanged();
      }
      return this;
    }
<pre>
Optional. Configuration of a stretched cluster. Required for clusters that
belong to a STRETCHED private cloud.
</pre>

<code>
.google.cloud.vmwareengine.v1.StretchedClusterConfig stretched_cluster_config = 17 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/Cluster.java