code: def __getitem__(self, key: Union[int, str, np.dtype]) -> Any:
      if not self._future_function:
          warnings.warn(
              str(
                  f"`mapping.{self._origin_function}` is now deprecated and will be removed in a future release."
                  "To silence this warning, please simply use if-else statement to get the corresponding value."
              ),
              DeprecationWarning,
              stacklevel=2,
          )
      else:
          warnings.warn(
              str(
                  f"`mapping.{self._origin_function}` is now deprecated and will be removed in a future release."
                  f"To silence this warning, please use `helper.{self._future_function}` instead."
              ),
              DeprecationWarning,
              stacklevel=2,
          )
      return super().__getitem__(key)
  
file_path: catboost/contrib/libs/onnx/onnx/mapping.py
imports: import warnings
  from typing import Any, Dict, NamedTuple, Union, cast
  import numpy
  from onnx import OptionalProto, SequenceProto, TensorProto
label_desc: Use image node_id 3 for calling the DeprecatedWarningDict obj's underlying member method code with example usage: obj.__getitem__(key) and returns: super