import enum

import socket

from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union, cast

from typing import TYPE_CHECKING, Any, Dict, List, Optional, Set, Union, cast

from ._exceptions import AbstractMethodException

from ._utils.net import _is_v6_address

"""Return the lookup table."""

return self._get_lookup()

def lookup_set(self) -> Set[DNSRecord]:

"""Return the lookup table as aset."""

return set(self._get_lookup())

def _get_lookup(self) -> Dict[DNSRecord, float]:

"""Return the lookup table, building it if needed."""

if self._lookup is None: