Javadoc
Coordinates of a Polygon are an array of LinearRing coordinate arrays.
The first element in the array represents the exterior ring. Any
subsequent elements represent interior rings (or holes).
Syntax:
No holes:
{ "type": "Polygon", "coordinates": [ [ [100.0, 0.0], [101.0, 0.0],
[101.0, 1.0], [100.0, 1.0], [100.0, 0.0] ] ] }
With holes:
{ "type": "Polygon", "coordinates": [ [ [100.0, 0.0], [101.0, 0.0],
[101.0, 1.0], [100.0, 1.0], [100.0, 0.0] ], [ [100.2, 0.2], [100.8, 0.2],
[100.8, 0.8], [100.2, 0.8], [100.2, 0.2] ] ] }