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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 _send_request(self):
 """ Sends the request to the backend. """

        if isinstance(self._worker, str):
            classname = self._worker
        else:
            classname = '%s.%s' % (self._worker.__module__,
                                   self._worker.__name__)
        self.request_id = str(uuid.uuid4())
        self.send({'request_id': self.request_id, 'worker': classname,
                   'data': self._args})