def METHOD_NAME(self) -> PathLike:
    """
    :return:
        Absolute path to this index object in the file system ( as opposed to the
        .path field which is a path relative to the git repository ).
        The returned path will be native to the system and contains '\' on windows."""
    if self.repo.working_tree_dir is not None:
        return join_path_native(self.repo.working_tree_dir, self.path)
    else:
        raise WorkTreeRepositoryUnsupported("Working_tree_dir was None or empty")