(self, visitor: ITopicTreeVisitor)
The visitor must adhere to API of ITopicTreeVisitor.
The visitor must adhere to API of ITopicTreeVisitor.
The visitor must adhere to API of ITopicTreeVisitor .
def setVisitor(self, visitor: ITopicTreeVisitor):
        """The visitor must adhere to API of ITopicTreeVisitor."""
        self.__handler = visitor
def setVisitor ( self , visitor : ITopicTreeVisitor ) : self . __handler = visitor