ets (like for example polygons with holes
 or a set of disjoints polyhedrons considered as a whole). In
 fact, the elements do not even need to be connected together
 (their topological connections are not used here). However, if the
 boundary does not really separate an inside open from an outside
 open (open having here its topological meaning), then subsequent
 calls to the <a href="../../../../../../../org/apache/commons/math3/geometry/partitioning/Region.html#checkPoint(org.apache.commons.math3.geometr