gistfile1.txt

public function instantiate($class) {
        $model = Yii::$app->modelMapper->instantiateObject(strtolower($class));
        if (is_null($model)) {
            $entityConfigId = substr($this->type, strlen("entity_"));
            $entityConfig   = \epmx\frontend\common\models\EntityConfig::findOne(['id' => $entityConfigId]);
            $model          = new \epmx\frontend\common\models\Entity(['entityConfig' => $entityConfig]);
        }
        return $model;
    }