/**
  * Uses the configuration from the application and returns the LooEntityManager.
  *
  * @return LooEntityManager
  */
 public function getEntityManager()
 {
     if (empty(static::$entityManager)) {
         $config = Setup::createAnnotationMetadataConfiguration(Settings::getEntityPaths(), Settings::isDevMode());
         $connection = Settings::getDbConnection();
         static::$entityManager = LooEntityManager::create($connection, $config);
     }
     return static::$entityManager;
 }