private com.google.protobuf.SingleFieldBuilderV3<
              com.google.cloud.vmwareengine.v1.StretchedClusterConfig,
              com.google.cloud.vmwareengine.v1.StretchedClusterConfig.Builder,
              com.google.cloud.vmwareengine.v1.StretchedClusterConfigOrBuilder>
          getStretchedClusterConfigFieldBuilder() {
        if (stretchedClusterConfigBuilder_ == null) {
          stretchedClusterConfigBuilder_ =
              new com.google.protobuf.SingleFieldBuilderV3<
                  com.google.cloud.vmwareengine.v1.StretchedClusterConfig,
                  com.google.cloud.vmwareengine.v1.StretchedClusterConfig.Builder,
                  com.google.cloud.vmwareengine.v1.StretchedClusterConfigOrBuilder>(
                  getStretchedClusterConfig(), getParentForChildren(), isClean());
          stretchedClusterConfig_ = null;
        }
        return stretchedClusterConfigBuilder_;
      }
<pre>
Optional. Configuration of a stretched cluster. Required for STRETCHED
private clouds.
</pre>

<code>
.google.cloud.vmwareengine.v1.StretchedClusterConfig stretched_cluster_config = 8 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/PrivateCloud.java