Bootmap Unit Tests
{ "type": "Feature", "id": "Donut polygon", "geometry": {"type": "Polygon", "coordinates": [ [ [4, 40], [5, 40], [5, 45], [4, 45], [4, 40] ], [ [4.2, 41], [4.8, 44], [4.8, 41], [4.2, 41] ] ]} }