code: function create_getter(statepen, store) {
          const static_op_params = Object.assign({ store }, {
              bullpen_verb: 'get',
              store_verb: 'fetch',
          });
          return function get_from_state(name, params) {
              return statepen.perform_operation(
                  new Op({ ...static_op_params, name, params }),
              );
          };
      }
docs: -----------