def get_versioned_files(cls):
        """List all files versioned by git in the current directory."""
        files = cls._git_ls_files()
        submodules = cls._list_submodules()
        for subdir in submodules:
            subdir = os.path.relpath(subdir).replace(os.path.sep, '/')
            files += add_prefix_to_each(subdir, cls._git_ls_files(subdir))
        return add_directories(files)
List all files versioned by git in the current directory.