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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def CloseExecSocket(self, tid=None):
 """Send closing request to exec socket."""

    response = self._SendToExecSocketRaw('__kill__', tid)
    if response != '__kill_ack__':
      logging.warning('May not have succeeded in closing socket, make sure '
                      'using execsocks().')