{
    "definitions": {
        "Default": {
            "clearance": 200000,
            "description": "",
            "diff pair gap": 250000,
            "diff pair width": 200000,
            "track width": 250000,
            "via diameter": 800000,
            "via drill": 400000,
            "uvia diameter": 300000,
            "uvia drill": 100000
        },
        "new_new_class": {
            "clearance": 200000,
            "description": "",
            "diff pair gap": 250000,
            "diff pair width": 200000,
            "track width": 250000,
            "via diameter": 800000,
            "via drill": 400000,
            "uvia diameter": 300000,
            "uvia drill": 100000
        }
    }
}