public function piece($filePiece)
    {
        $filePiece = $this->viewPath . "{$filePiece}.{$this->extension}";

        if (file_exists($filePiece)) {
            include $filePiece;
        } else {
            MbException::registerError(new \Exception("The file {$filePiece} not found!"));
        }
    }