(self)
return self.__allTopics
Get the topic that is parent of all root (ie top-level) topics,
        for default TopicManager instance created when this module is imported.
        Some notes:

        - "root of all topics" topic satisfies isAll()==True, isRoot()==False,
          getParent() is None;
        - all root-level topics satisfy isAll()==False, isRoot()==True, and
          getParent() is getDefaultTopicTreeRoot();
        - all other topics satisfy neither.
Get the topic that is parent of all root (ie top-level) topics,
        for default TopicManager instance created when this module is imported.
        Some notes:
Get the topic that is parent of all root ( ie top - level ) topics for default TopicManager instance created when this module is imported . Some notes :
def getRootAllTopics(self) -> Topic:
        """
        Get the topic that is parent of all root (ie top-level) topics,
        for default TopicManager instance created when this module is imported.
        Some notes:

        - "root of all topics" topic satisfies isAll()==True, isRoot()==False,
          getParent() is None;
        - all root-level topics satisfy isAll()==False, isRoot()==True, and
          getParent() is getDefaultTopicTreeRoot();
        - all other topics satisfy neither.
        """
        return self.__allTopics
def getRootAllTopics ( self ) -> Topic : return self . __allTopics