/**
  * Get repository user
  *
  * @param string $repository_user
  * @param Repository $repository
  * @return SourceUser
  */
 function findByRepositoryUser($repository_user, $repository_id)
 {
     $source_user = SourceUsers::find(array('conditions' => "repository_user = '******' AND repository_id = '{$repository_id}'", 'one' => true));
     if (instance_of($source_user, 'SourceUser')) {
         $source_user->setSystemUser();
     }
     return $source_user;
 }