code: def replace(self, method_or_response=None, url=None, body="", *args, **kwargs):
          
          if isinstance(method_or_response, BaseResponse):
              response = method_or_response
          else:
              response = Response(method=method_or_response, url=url, body=body, **kwargs)
  
          index = self._matches.index(response)
          self._matches[index] = response
docs: Replaces a response previously added using ``add()``. The signature
          is identical to ``add()``. The response is identified using ``method``
          and ``url``, and the first matching response is replaced.
  
          >>> responses.add(responses.GET, 'http://example.org', json={'data': 1})
          >>> responses.replace(responses.GET, 'http://example.org', json={'data': 2})