public void relateAcrossR19To(Shape_c target, boolean notifyChanges) {
if (target != null) {
target.relateAcrossR19To(this, notifyChanges);
}
}
public void relateAcrossR19To(Shape_c target) {
if (target != null) {
target.relateAcrossR19To(this, true);
}
}