code: def delete_review(self, pub_name, ext_name, review_id):
          
          route_values = {}
          if pub_name is not None:
              route_values['pubName'] = self._serialize.url('pub_name', pub_name, 'str')
          if ext_name is not None:
              route_values['extName'] = self._serialize.url('ext_name', ext_name, 'str')
          if review_id is not None:
              route_values['reviewId'] = self._serialize.url('review_id', review_id, 'long')
          self._send(http_method='DELETE',
                     location_id='e6e85b9d-aa70-40e6-aa28-d0fbf40b91a3',
                     version='5.1-preview.1',
                     route_values=route_values)
docs: DeleteReview.
          [Preview API] Deletes a review
          :param str pub_name: Name of the pubilsher who published the extension
          :param str ext_name: Name of the extension
          :param long review_id: Id of the review which needs to be updated