code: def __hash__(self) -> int:
      return hash((str(self), str(self.subtype), self.closed))
  
imports: from __future__ import annotations
  import json
  from typing import TYPE_CHECKING
  import pyarrow
  from pandas.compat import pa_version_under14p1
  from pandas.core.dtypes.dtypes import IntervalDtype, PeriodDtype
  from pandas.core.arrays.interval import VALID_CLOSED
label_desc: Use image node_id 8 for calling the ArrowIntervalType obj's underlying member method code with example usage: obj.__hash__() and returns: hash