code: function MultiPolygon(multiPolygon) {
          crs(multiPolygon);
          bbox(multiPolygon);
          if (!requiredProperty(multiPolygon, 'coordinates', 'array')) {
              if (!positionArray(multiPolygon.coordinates, 'LinearRing', 3)) {
                  rightHandRule(multiPolygon, errors);
              }
          }
      }
docs: https://tools.ietf.org/html/rfc7946#section-3.1.7