Return a cached dictionary of the user's moderated reddits.

        This list is used internally. Consider using the `get_my_moderation`
        function instead.

def get_cached_moderated_reddits(self):
        """Return a cached dictionary of the user's moderated reddits.

        This list is used internally. Consider using the `get_my_moderation`
        function instead.

        """
        if self._mod_subs is None:
            self._mod_subs = {'mod': self.reddit_session.get_subreddit('mod')}
            for sub in self.reddit_session.get_my_moderation(limit=None):
                self._mod_subs[six.text_type(sub).lower()] = sub
        return self._mod_subs