code: def test_inference_type_node_conflict() -> None:
      """Make sure the inference signal type hierarchy is correctly configured."""
      # IDENTIFIER
      assert InferenceSignalType.ID.UNKNOWN.is_subtype_of(
          InferenceSignalType.UNKNOWN
      )
      assert not InferenceSignalType.ID.UNKNOWN.is_subtype_of(
          InferenceSignalType.DIMENSION.UNKNOWN
      )
      assert not InferenceSignalType.ID.UNKNOWN.is_subtype_of(
          InferenceSignalType.MEASURE.UNKNOWN
      )
  
      assert InferenceSignalType.ID.UNIQUE.is_subtype_of(
          InferenceSignalType.ID.UNKNOWN
      )
      assert InferenceSignalType.ID.FOREIGN.is_subtype_of(
          InferenceSignalType.ID.UNKNOWN
      )
      assert InferenceSignalType.ID.PRIMARY.is_subtype_of(
          InferenceSignalType.ID.UNIQUE
      )
  
      # DIMENSION
      assert InferenceSignalType.DIMENSION.UNKNOWN.is_subtype_of(
          InferenceSignalType.UNKNOWN
      )
      assert not InferenceSignalType.DIMENSION.UNKNOWN.is_subtype_of(
          InferenceSignalType.ID.UNKNOWN
      )
      assert not InferenceSignalType.DIMENSION.UNKNOWN.is_subtype_of(
          InferenceSignalType.MEASURE.UNKNOWN
      )
  
      assert InferenceSignalType.DIMENSION.CATEGORICAL.is_subtype_of(
          InferenceSignalType.DIMENSION.UNKNOWN
      )
      assert InferenceSignalType.DIMENSION.TIME.is_subtype_of(
          InferenceSignalType.DIMENSION.UNKNOWN
      )
  
      # MEASURE
      assert InferenceSignalType.MEASURE.UNKNOWN.is_subtype_of(
          InferenceSignalType.UNKNOWN
      )
      assert not InferenceSignalType.MEASURE.UNKNOWN.is_subtype_of(
          InferenceSignalType.ID.UNKNOWN
      )
      assert not InferenceSignalType.MEASURE.UNKNOWN.is_subtype_of(
          InferenceSignalType.DIMENSION.UNKNOWN
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_inference_type_node_conflict() without return types