public function getLabelName()
    {
        if (is_null($this->_labelName)) {
            $this->_labelName = $this->name;
            $storage = $this->storage;
            if (!empty($storage)) {
                if (empty($this->_labelName)) {
                    $this->_labelName = $storage->file_name;
                } else {
                    $this->_labelName .= " ({$storage->file_name})";
                }
            }
        }

        return $this->_labelName;
    }