code: def __setitem__(
      self, i: Union[int, slice], values: Union[CalVT, Iterable[CalVT]]
  ) -> None:
      calendar = self._read_calendar()
      calendar[i] = values
      self._write_calendar(values=calendar)
  
imports: import struct
  from pathlib import Path
  from typing import Iterable, Union, Dict, Mapping, Tuple, List
  import numpy
  import pandas
  from qlib.utils.time import Freq
  from qlib.utils.resam import resam_calendar
  from qlib.config import C
  from qlib.data.cache import H
  from qlib.log import get_module_logger
  from qlib.data.storage import CalendarStorage, InstrumentStorage, FeatureStorage, CalVT, InstKT, InstVT
label_desc: Use image node_id 14 for calling the FileCalendarStorage obj's underlying member method code with example usage: obj.__setitem__(i, values) without return types