code: def validate(self, name: str, obj):
      super().validate(name, obj)
      key = obj[self.key]
      self.valid_key.validate(f"{name}.{key}", key)
      self.checkers[key].validate(f"{name}", obj)
  
imports: from typing import Union, Dict, Pattern, Callable, Any, List, Optional
  import re
  import logging
label_desc: Use image node_id 3 for calling the SwitchValidator obj's underlying member method code with example usage: obj.validate(name, obj) without return types