def Size(self):
    self.Exists(assert_exists=True)
    try:
      return os.stat(self.path).st_size
    except OSError as err:
      base.ThrowError("%s: can't stat: %s", self.path, err)
Returns True if this option has been set with a valid value
dataset/ETHPy150Open ganeti/ganeti/lib/storage/filestorage.py/FileDeviceHelper.Size--crossover with--dataset/ETHPy150Open NVIDIA/DIGITS/digits/config/config_option.py/Option.valid