def METHOD_NAME(pth: str) -> Optional[str]:
    """Callback function for MachO.rewriteLoadCommands() that is
    called on every lookup path setted in the DLL headers.
    By returning None for system libraries, it changes nothing.
    Else we return a relative path pointing to the good file
    in the MacOS folder.
    """
    basename = os.path.basename(pth)
    if not basename.startswith("Qt"):
        return None
    return f"@loader_path{good_path}/{basename}"