/**
* get getAccessTokensForUser.
*
* @param $userId
*
* @return array|null
*/
public function getAccessTokensForUser($userId)
{
$accessTokenRepository = new AccessTokenRepository();
// instance of AccessTokenRepositoryInterface
$user = new UserEntity();
// instance of AccessTokenRepositoryInterface
$user->setIdentifier($userId);
return $accessTokenRepository->findAccessTokensByUser($user);
}
