449   return [f.filename for f in sorted(result, key=lambda f: f.timestamp)]
452 def GetFileTimestamp(filename):  argument
454   st = os.stat(filename, follow_symlinks=False)
480   return [f.filename for f in sorted(result, key=lambda f: f.timestamp)]
492 def CreateEmptyFile(filename):  argument
495     os.makedirs(os.path.dirname(filename))
498   open(filename, "w").close()
499   os.utime(filename)
502 def TouchFile(filename):  argument
503   os.utime(filename)
627   def __init__(self, filename, timestamp):  argument
628     self.filename = filename