class_docstr: Context manager class that powers prohibit_commit.
class_docstr_tok: ["Context","manager","class","that","powers","prohibit_commit","."]
code: def __exit__(self, *exc_info):
      event.remove(self.session, "before_commit", self._validate_commit)
  
imports: from __future__ import annotations
  import contextlib
  import copy
  import datetime
  import json
  import logging
  from typing import TYPE_CHECKING, Any, Generator, Iterable, overload
  from dateutil import relativedelta
  from sqlalchemy import TIMESTAMP, PickleType, event, nullsfirst, tuple_
  from sqlalchemy.dialects import mysql
  from sqlalchemy.types import JSON, Text, TypeDecorator
  from airflow.configuration import conf
  from airflow.serialization.enums import Encoding
  from airflow.utils.timezone import make_naive, utc
label_desc: Use image node_id 4 for calling the CommitProhibitorGuard obj's underlying member method code with example usage: obj.__exit__() without return types