code: def request(self, filter=None):
          
          node = new_ele("get-bulk")
          if filter is not None:
              node.append(util.build_filter(filter))
          return self._request(node)
docs: Retrieve running configuration and device state information.
  
          *filter* specifies the portion of the configuration to retrieve (by default entire configuration is retrieved)
  
          :seealso: :ref:`filter_params`