public function testEmails()
 {
     $user = new User();
     $email = new Email();
     $this->assertNotContains($email, $user->getEmails());
     $user->addEmail($email);
     $this->assertContains($email, $user->getEmails());
     $user->removeEmail($email);
     $this->assertNotContains($email, $user->getEmails());
 }