code: def get_readonly(self, connection):
      return connection.readonly
  
imports: from __future__ import annotations
  import collections.abc
  import logging
  import re
  from typing import cast
  from .None import ranges
  from ._psycopg_common import _PGDialect_common_psycopg
  from ._psycopg_common import _PGExecutionContext_common_psycopg
  from .base import PGIdentifierPreparer
  from .json import JSON
  from .json import JSONB
  from ...None import types
  from ...None import util
  from ...util import FastIntFlag
  from ...util import parse_user_argument_for_enum
label_desc: Use image node_id 9 for calling the PGDialect_psycopg2 obj's underlying member method code with example usage: obj.get_readonly(connection) and returns: connection