{ "contact_points": [], "functional_points": [ { "id": 0, "description": "At the center of the left side of the tray", "usage": "Used to indicate the position where the object on the left should be placed into the tray." }, { "id": 1, "description": "At the center of the right side of the tray", "usage": "Used to indicate the position where the object on the right should be placed into the tray." } ] }