code: public static Type[] getRelations(GeometricShapeVariable gv1, GeometricShapeVariable gv2) {
  		return getRelations(gv1, gv2, false);		
  	}
docs: Get the DE-9IM relation(s) existing between two {@link GeometricShapeVariable}s.
  @param gv1 The first {@link GeometricShapeVariable} (the source of the directed edge).
  @param gv2 The second {@link GeometricShapeVariable} (the destination of the directed edge).
  @return The DE-9IM relation(s) existing between the two given {@link GeometricShapeVariable}s.