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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 dataReceived(self, data):
 """Use stompbuffer to determine when a complete message has been received. """

        self.stompBuffer.appendData(data)

        while True:
           msg = self.stompBuffer.getOneMessage()
           if msg is None:
               break

           returned = self.react(msg)
           if returned:
               self.transport.write(returned)