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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 __stopOpenThread(self):
 """stop OpenThread stack Returns: True: successful to stop OpenThread stack and thread interface down False: fail to stop OpenThread stack """

        print 'call stopOpenThread'
        try:
            if self.__sendCommand('thread stop')[0] == 'Done':
                return self.__sendCommand('ifconfig down')[0] == 'Done'
            else:
                return False
        except Exception, e:
            ModuleHelper.WriteIntoDebugLogger("stopOpenThread() Error: " + str(e))