code: def set_search_engine(self, engine):
          '''Set the search ``engine`` for this :class:`Router`.'''
          self._search_engine = engine
          self._search_engine.set_router(selff set_search_engine(self, engine):
          '''Set the search ``engine`` for this :class:`Router`.'''
          self._search_engine = engine
          self._search_engine.set_router(self)
docs: Set the search ``engine`` for this :class:`Router`.