/**
  * Finds a user by the given credentials.
  *
  * @param array $credentials
  * @return \Cartalyst\Sentry\Users\UserInterface 
  * @throws \Cartalyst\Sentry\Users\UserNotFoundException
  * @static 
  */
 public static function findUserByCredentials($credentials)
 {
     return \Cartalyst\Sentry\Sentry::findUserByCredentials($credentials);
 }