Set the access and modified times of the file specified by ``path``.
        If ``times`` is ``None``, then the file's access and modified times
        are set to the current time.  Otherwise, ``times`` must be a 2-tuple
        of numbers, of the form ``(atime, mtime)``, which is used to set the
        access and modified times, respectively.  This bizarre API is mimicked
        from Python for the sake of consistency -- I apologize.

        :param str path: path of the file to modify
        :param tuple times:
            ``None`` or a tuple of (access time, modified time) in standard
            internet epoch time (seconds since 01 January 1970 GMT)

def utime(self, path, times):
        """
        Set the access and modified times of the file specified by ``path``.
        If ``times`` is ``None``, then the file's access and modified times
        are set to the current time.  Otherwise, ``times`` must be a 2-tuple
        of numbers, of the form ``(atime, mtime)``, which is used to set the
        access and modified times, respectively.  This bizarre API is mimicked
        from Python for the sake of consistency -- I apologize.

        :param str path: path of the file to modify
        :param tuple times:
            ``None`` or a tuple of (access time, modified time) in standard
            internet epoch time (seconds since 01 January 1970 GMT)
        """
        path = self._adjust_cwd(path)
        if times is None:
            times = (time.time(), time.time())
        self._log(DEBUG, "utime({!r}, {!r})".format(path, times))
        attr = SFTPAttributes()
        attr.st_atime, attr.st_mtime = times
        self._request(CMD_SETSTAT, path, attr)