code: def _operator_dunder_methods(self, dunder: str) -> Set[Callable]:
      if dunder not in self._operation_methods_cache:
          self._operation_methods_cache[
              dunder
          ] = self._safe_get_methods(self.allowed_operations, dunder)
      return self._operation_methods_cache[dunder]
  
imports: from inspect import signature, Signature
  from typing import Any, Callable, Dict, Set, Sequence, Tuple, NamedTuple, Type, Literal, Union, TYPE_CHECKING
  import ast
  import builtins
  import collections
  import operator
  import sys
  from functools import cached_property
  from dataclasses import dataclass, field
  from types import MethodDescriptorType, ModuleType
  from IPython.utils.docs import GENERATING_DOCUMENTATION
  from IPython.utils.decorators import undoc
label_desc: Use image node_id 4 for calling the SelectivePolicy obj's underlying member method code with example usage: obj._operator_dunder_methods(dunder) and returns: self