code: def GetGtfsFactory(self):
      
  
      if self._gtfs_factory is None:
        #TODO(anog): We really need to create a dependency graph and clean things
        #            up, as the comment in __init__.py says.
        #            Not having GenericGTFSObject as a leaf (with no other
        #            imports) creates all sorts of circular import problems.
        #            This is why the import is here and not at the top level.
        #            When this runs, gtfsfactory should have already been loaded
        #            by other modules, avoiding the circular imports.
        from . import gtfsfactory
        self._gtfs_factory = gtfsfactory.GetGtfsFactory()
      return self._gtfs_factory
docs: Return the object's GTFS Factory.
  
      Returns:
          The GTFS Factory that was set for this object. If none was explicitly
          set, it first sets the object's factory to transitfeed's GtfsFactory
          and returns it