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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 issueCommand(self, command, *args):
 """ Issue the given Assuan command and return a Deferred that will fire with the response. """

        result = Deferred()
        self._dq.append(result)
        self.sendLine(b" ".join([command] + list(args)))
        return result