optimum/exporters/executorch/recipes/coreml.py [39:66]:
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    model: Union[CausalLMExportableModule, MaskedLMExportableModule, Seq2SeqLMExportableModule],
    **kwargs,
):
    """
    Export a PyTorch model to ExecuTorch w/ delegation to CoreML backend.

    This function also write metadata required by the ExecuTorch runtime to the model.

    Args:
        model (Union[CausalLMExportableModule, MaskedLMExportableModule, Seq2SeqLMExportableModule]):
            The PyTorch model to be exported to ExecuTorch.
        **kwargs:
            Additional keyword arguments for recipe-specific configurations, e.g. export using different example inputs, or different compile/bechend configs.

    Returns:
        Dict[str, ExecutorchProgram]:
            A map of exported and optimized program for ExecuTorch.
            For encoder-decoder models or multimodal models, it may generate multiple programs.
    """
    # Import here because coremltools might not be available in all environments
    import coremltools as ct

    from executorch.backends.apple.coreml.compiler import CoreMLBackend
    from executorch.backends.apple.coreml.partition import CoreMLPartitioner

    def _lower_to_executorch(
        exported_programs: Dict[str, ExportedProgram],
        metadata=None,
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optimum/exporters/executorch/recipes/xnnpack.py [43:65]:
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    model: Union[CausalLMExportableModule, MaskedLMExportableModule, Seq2SeqLMExportableModule],
    **kwargs,
):
    """
    Export a PyTorch model to ExecuTorch w/ delegation to XNNPACK backend.

    This function also write metadata required by the ExecuTorch runtime to the model.

    Args:
        model (Union[CausalLMExportableModule, MaskedLMExportableModule, Seq2SeqLMExportableModule]):
            The PyTorch model to be exported to ExecuTorch.
        **kwargs:
            Additional keyword arguments for recipe-specific configurations, e.g. export using different example inputs, or different compile/bechend configs.

    Returns:
        Dict[str, ExecutorchProgram]:
            A map of exported and optimized program for ExecuTorch.
            For encoder-decoder models or multimodal models, it may generate multiple programs.
    """

    def _lower_to_executorch(
        exported_programs: Dict[str, ExportedProgram],
        metadata=None,
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