/// <summary>
        /// 删除文件
        /// </summary>
        /// <param name="fileName">文件名称</param>
        void DeleteFile(string fileName);

        /// <summary>
        /// 删除多个文件
        /// </summary>
        /// <param name="fileNames">文件名称集合</param>
        void DeleteFiles(List<string> fileNames);

        /// <summary>
        /// 将文件拷贝到新位置
        /// </summary>
        /// <param name="sourceFileName">要拷贝的文件名称</param>
        /// <param name="destFileName">目标文件的名称</param>
        /// <param name="overwrite">是否允许覆盖 默认为false</param>
        void CopyFile(string sourceFileName, string destFileName, bool overwrite = false);

        /// <summary>
        /// 将文件移动到新位置
        /// </s