private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmwareengine.v1.PrivateConnection,
            com.google.cloud.vmwareengine.v1.PrivateConnection.Builder,
            com.google.cloud.vmwareengine.v1.PrivateConnectionOrBuilder>
        getPrivateConnectionFieldBuilder() {
      if (privateConnectionBuilder_ == null) {
        privateConnectionBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmwareengine.v1.PrivateConnection,
                com.google.cloud.vmwareengine.v1.PrivateConnection.Builder,
                com.google.cloud.vmwareengine.v1.PrivateConnectionOrBuilder>(
                getPrivateConnection(), getParentForChildren(), isClean());
        privateConnection_ = null;
      }
      return privateConnectionBuilder_;
    }
<pre>
Required. The initial description of the new private connection.
</pre>

<code>
.google.cloud.vmwareengine.v1.PrivateConnection private_connection = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/CreatePrivateConnectionRequest.java