class_docstr: Tests every slot needs to fulfill.
  
  Each slot can declare further tests on its own.
class_docstr_tok: ["Tests","every","slot","needs","to","fulfill",".","Each","slot","can","declare","further","tests","on","its","own","."]
docstr: Values, that should be handled gracefully but where the
  featurization is not defined.
code: def invalid_value(self, request: SubRequest) -> Any:
      """Values, that should be handled gracefully but where the
      featurization is not defined."""
      raise NotImplementedError
  
imports: from typing import Any, Tuple, List, Dict, Text
  import pytest
  from _pytest.fixtures import SubRequest
  import rasa.shared.core.constants
  from rasa.shared.core.events import SlotSet
  from rasa.shared.core.slots import InvalidSlotTypeException, Slot, TextSlot, BooleanSlot, FloatSlot, ListSlot, CategoricalSlot, bool_from_any, AnySlot, InvalidSlotConfigError
  from rasa.shared.core.trackers import DialogueStateTracker
label_desc: Use image node_id 3 for calling the SlotTestCollection obj's underlying member method code with example usage: obj.invalid_value(request) without return types