MapToManyTarget newTarget = o1
.getObjectContext()
.newObject(MapToManyTarget.class);
newTarget.setName("X");
o1.addToTargets(newTarget);
assertEquals(4, targets.size());
assertSame(newTarget, o1.getTargets().get("X"));
assertSame(o1, newTarget.getMapToMany());
o1.getObjectContext().commitChanges();