public void internalClose(boolean keepAlive) throws Exception {
    try {
      getConnection().close(keepAlive);
    } finally {
      if (updater != null) {
        updater.close();
      }
    }
  }
A wrapper that holds a client to server connection and a server to client connection.

The clientToServerConnection should not be used outside of this class.
geode-core/src/main/java/org/apache/geode/cache/client/internal/QueueConnectionImpl.java