def add(self, properties, image, id=None):
        if id is None:
            id = self.generate_id()
        self[id] = Tile(id, properties, image)
Add a new Tile to this TileSet, generating a unique id if
dataset/ETHPy150Open ardekantur/pyglet/contrib/scene2d/scene2d/tile.py/TileSet.add