AutoSave::remove PHP Метод

    public static function remove($key)
    {
        $auto_save = Yii::app()->session['autosave'];
        unset($auto_save[$key]);
        Yii::app()->session['autosave'] = $auto_save;
    }

 public function testAutoSaveRemove()
 {
     $key = 'test_key';
     $value = 'test_value';
     AutoSave::add($key, $value);
     AutoSave::remove($key);
     $this->assertNull(Autosave::get($key));
 }