I don't understand how to use the x2 object type. I've created a new map (using a "roads" tileset that I have) & imported the x2 Object Type, but I can't figure out how to associate it with the map. When I look at the map that came with the example (map1.json) it shows an object layer (ObjectLayer1) with a sub-layer (x2) - but I can't seem to get that in my map.
* Other objects will be ignored. This is useful if you want to add objects based on Tile images and then add a x2 object with the same shape. You can see it in many of the examples.