code: def get_allow_cost_estimate(cls, extra: dict[str, Any]) -> bool:
      return True
  
imports: from __future__ import annotations
  import json
  import logging
  import re
  from datetime import datetime
  from re import Pattern
  from typing import Any, TYPE_CHECKING
  import sqlparse
  from flask_babel import gettext
  from sqlalchemy.dialects.postgresql import DOUBLE_PRECISION, ENUM, JSON
  from sqlalchemy.dialects.postgresql.base import PGInspector
  from sqlalchemy.engine.reflection import Inspector
  from sqlalchemy.engine.url import URL
  from sqlalchemy.types import Date, DateTime, String
  from superset.constants import TimeGrain
  from superset.db_engine_specs.base import BaseEngineSpec, BasicParametersMixin
  from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
  from superset.exceptions import SupersetException, SupersetSecurityException
  from superset.models.sql_lab import Query
  from superset.utils import core
  from superset.utils.core import GenericDataType
label_desc: Use image node_id 4 for calling the PostgresEngineSpec obj's underlying member method code with example usage: obj.get_allow_cost_estimate(cls, extra) and returns: True