code: def test_unknown_target_mapping_syntax():
      """
      In the above example, `multi_depend_unknown` does not exist
      """
  
      with pytest.raises(ValueError):
  
          class UnknownTargetMappingLayer(LayerContainer):
              PARAM_MAPPING = {
                  "model.val.item.d_1": "multi_depend1.dependency_1",
                  "model.val.item.d_2": "multi_depend1.dependency_2",
                  "model.val.item2.d_1": "multi_depend_unknown.dependency_1",
              }
  
              multi_depend: MultiDependencyContainer
  
imports: import pytest
  import torch
  from deepspeed.inference.v2.allocator import on_device
  from deepspeed.inference.v2.inference_parameter import InferenceParameter
  from deepspeed.inference.v2.model_implementations.parameter_base import ParameterBase, ParamList
  from deepspeed.inference.v2.model_implementations.layer_container_base import LayerContainer
label_desc: Use image node_id 5 for calling a global function with example usage: test_unknown_target_mapping_syntax() without return types