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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 _get_stream(self, multiprocess=False):
 """ Get the stream used to store the flaky report. If this nose run is going to use the multiprocess plugin, then use a multiprocess-list backed StringIO proxy; otherwise, use the default stream. :param multiprocess: Whether or not this test run is configured for multiprocessing. :type multiprocess: `bool` :return: The stream to use for storing the flaky report. :rtype: :class:`StringIO` or :class:`MultiprocessingStringIO` """

        if multiprocess:
            from flaky.multiprocess_string_io import MultiprocessingStringIO
            return MultiprocessingStringIO()
        return self._stream