Cesium Polygon entity get all positions and holes

I could not find a nice way to get the all positions and holes from Cesium polygon (see the coordinates structure in attached image), and as far as possible not to use recursive function to get all the coordinates. Also checked API and there is nothing that I can use, ex. "getCoordiantes" or something like that.

Usage to check all the coordinates height for comparing.

Here is also the GeoJSON example:

{
    "type": "FeatureCollection",
    "features": [{
        "type": "Feature",
        "properties": {
            "dataType": "AirspaceType",
            "geometryExtension": {
                "extruded": {
                    "maxHeight": 10000,
                    "minHeight": 0
                }
            },
            "id": "d50b2df0-9447-4a27-8710-eb62dff66ade",
            "name": "Unnamed Layer",
            "category": "default"
        },
        "geometry": {
            "type": "Polygon",
            "coordinates": [
                [
                    [0, 0, 0],
                    [0.2, 0, 0],
                    [0.2, 0.2, 0],
                    [0, 0.2, 0],
                    [0, 0, 0]
                ],
                [
                    [0.03504, 0.096817],
                    [0.035384, 0.18917],
                    [0.18132, 0.18917],
                    [0.174109, 0.020599],
                    [0.03504, 0.096817]
                ],
                [
                    [0.059077, 0.100937],
                    [0.059077, 0.173034],
                    [0.157283, 0.173034],
                    [0.157283, 0.100937],
                    [0.059077, 0.100937]
                ],
                [
                    [0.07968, 0.154838],
                    [0.13153, 0.156555],
                    [0.136681, 0.124626],
                    [0.094102, 0.118446],
                    [0.07968, 0.154838]
                ]
            ]
        }
    }]
}