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Currently, if EndpointType in the DescribeClusterRequest is 2 (controllers), a list of registered controller nodes are returned using as the same DescribeClusterBroker classin the result. The DescribeClusterBroker class will be updated with the new field, "fenced". Therefore when returning controller nodes in the response, this field would just be set to false as the default value since this field is not relevant for controller nodes.
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