{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -1,
              1
            ],
            [
              1,
              1
            ],
            [
              1,
              -1
            ],
            [
              -1,
              -1
            ],
            [
              -1,
              1
            ]
          ]
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "marker-color": "#7e7e7e",
        "marker-size": "medium",
        "marker-symbol": "harbor"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          0,
          0
        ]
      }
    }
  ]
}