/**
  * Create admin user
  *
  * @return null
  */
 private function setTeacher()
 {
     /** @var User $user */
     $user = $this->userManager->createUser();
     $user->setFirstName('Paul');
     $user->setLastName('Watson');
     $user->setUsername('teacher');
     $user->setEmail('*****@*****.**');
     $user->setSchool($this->getReference('school0'));
     $user->setPlainPassword('password');
     $user->setEnabled(true);
     $user->setLocked(false);
     $user->setRoles(array('ROLE_ADMIN'));
     $this->userManager->updateUser($user, true);
     $this->setReference('teacher0', $user);
     $user = $this->userManager->createUser();
     $user->setFirstName('Will');
     $user->setLastName('Smith');
     $user->setUsername('teacher2');
     $user->setEmail('*****@*****.**');
     $user->setSchool($this->getReference('school1'));
     $user->setPlainPassword('password');
     $user->setEnabled(true);
     $user->setLocked(false);
     $user->setRoles(array('ROLE_ADMIN'));
     $this->userManager->updateUser($user, true);
     $this->setReference('teacher1', $user);
 }