filehandle.utimes(atime, mtime)

• atime <number> | <string> | <Date>

• mtime <number> | <string> | <Date>

• 返回：<Promise>

  ¥Returns: <Promise>

更改 <FileHandle> 引用的对象的文件系统时间戳，然后在成功时不带参数地履行 promise。

¥Change the file system timestamps of the object referenced by the <FileHandle> then fulfills the promise with no arguments upon success.