code: def get_publisher(self, publisher_id):
          
          route_values = {}
          if publisher_id is not None:
              route_values['publisherId'] = self._serialize.url('publisher_id', publisher_id, 'str')
          response = self._send(http_method='GET',
                                location_id='1e83a210-5b53-43bc-90f0-d476a4e5d731',
                                version='5.0',
                                route_values=route_values)
          return self._deserialize('Publisher', response)
docs: GetPublisher.
          Get a specific service hooks publisher.
          :param str publisher_id: ID for a publisher.
          :rtype: :class:`<Publisher> <azure.devops.v5_0.service_hooks.models.Publisher>`