f1 = d.getFamily(f1.id());
assertEquals(1,f1.getFriendPersons().size());
assertEquals(0,p1.getFriendFamilies().size());
//d.dump("f1.removeFriendPerson(p1) done");
d.commit();
f1 = d.getFamily(f1.id());
p2 = d.getPerson(p2.id());
p2.removeFriendFamily(f1); // person -> family
//d.dump("p2.removeFriendFamily(f1) done");