:class:`Asset`: The same operation as :meth:`Guild.banner_url_as`.

def banner_url_as(self, *, format='webp', size=2048):
        """:class:`Asset`: The same operation as :meth:`Guild.banner_url_as`."""
        return Asset._from_guild_image(self._state, self.id, self.banner, 'banners', format=format, size=size)