def categories(self):
        """List[:class:`CategoryChannel`]: A list of categories that belongs to this guild.

        This is sorted by the position and are in UI order from top to bottom.
        """
        r = [ch for ch in self._channels.values() if isinstance(ch, CategoryChannel)]
        r.sort(key=lambda c: (c.position, c.id))
        return r
List[:class:`CategoryChannel`]: A list of categories that belongs to this guild.

        This is sorted by the position and are in UI order from top to bottom.