public function testRelationsBackRef($contact)
{
$this->assertEquals($contact->user->contact === $contact, false);
$this->assertEquals($contact->user_with_backref->contact === $contact, true);
$user = $contact->user;
$this->assertEquals($user->contacts[0]->user === $user, false);
$this->assertEquals($user->contacts_with_backref[0]->user === $user, true);
return $contact;
}