private static FindCoordinatorResponse prepareOldFindCoordinatorResponse(Errors error, Node node) {
        return FindCoordinatorResponse.prepareOldResponse(error, node);
    }
Test if admin client can be closed in the callback invoked when
an api call completes. If calling {@link Admin#close()} in callback, AdminClient thread hangs
clients/src/test/java/org/apache/kafka/clients/admin/KafkaAdminClientTest.java