/**
*
* @param User $user
* @throws \Veloci\User\Exception\ValidationException
*/
public function signup(User $user)
{
$this->modelValidator->validate($user);
if ($this->userRepository->usernameAlreadyExists($user->getUsername())) {
throw new ValidationException(['username' => 'duplicated']);
}
$this->userRepository->save($user);
}
