docs: private static String polygonCoordinatesFromWkt(String wkt) {
          wkt = removeBrackets(wkt,2);
          String coordinates;
          boolean polygonContainsInnerHoles = wkt.contains("(");
          if(polygonContainsInnerHoles) {
              String[] polygons = wkt.split("\\s*\\)\\s*,\\s*\\(\\s*");
              String[] coordinatesOfPolygons = new String[polygons.length];
              for (int i = 0; i < polygons.length; i++) {
                  String polygonCoordinates = getJsonArrayFromListOfPoints(polygons[i]);
                  coordinatesOfPolygons[i] = polygonCoordinates;
              }
              coordinates = Joiner.on(",").join(coordinatesOfPolygons);
          }
          else {
              coordinates = getJsonArrayFromListOfPoints(wkt);
          }
          return String.format("[%s]", coordinates);
      }