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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 dump_request_and_response(self, response):
 """Return a string containing a nicely formatted representation of the request and response objects for logging and debugging. - Note: Does not work if the request or response body is a MultipartEncoder object. """

        if response.reason is None:
            response.reason = "<unknown>"
        return d1_client.util.normalize_request_response_dump(
            requests_toolbelt.utils.dump.dump_response(response)
        )