def create_dummy_files(backend_specific_objects: Optional[Dict[str, List[str]]] = None) -> Dict[str, str]:
    """
    Create the content of the dummy files.

    Args:
        backend_specific_objects (`Dict[str, List[str]]`, *optional*):
            The mapping backend name to list of backend-specific objects. If not passed, will be obtained by calling
            `read_init()`.

    Returns:
        `Dict[str, str]`: A dictionary mapping backend name to code of the corresponding backend file.
    """
    if backend_specific_objects is None:
        backend_specific_objects = read_init()

    dummy_files = {}

    for backend, objects in backend_specific_objects.items():
        backend_name = "[" + ", ".join(f'"{b}"' for b in backend.split("_and_")) + "]"
        dummy_file = "# This file is autogenerated by the command `make fix-copies`, do not edit.\n"
        dummy_file += "from ..utils import DummyObject, requires_backends\n\n"
        dummy_file += "\n".join([create_dummy_object(o, backend_name) for o in objects])
        dummy_files[backend] = dummy_file

    return dummy_files

    Create the content of the dummy files.

    Args:
        backend_specific_objects (`Dict[str, List[str]]`, *optional*):
            The mapping backend name to list of backend-specific objects. If not passed, will be obtained by calling
            `read_init()`.

    Returns:
        `Dict[str, str]`: A dictionary mapping backend name to code of the corresponding backend file.
    
dpkd/transformers/utils/check_dummies.py