def inherit_kwargs(inherit_func):
    """
    TODO move to util_decor
    inherit_func = inspect_pdfs
    func = encoder.visualize.im_func
    """
    import utool as ut
    keys, is_arbitrary = ut.get_kwargs(inherit_func)
    if is_arbitrary:
        keys += ['**kwargs']
    kwargs_append = '\n'.join(keys)
    #from six.moves import builtins
    #builtins.print(kwargs_block)
    def _wrp(func):
        if func.__doc__ is None:
            func.__doc__ = ''
        # TODO append to kwargs block if it exists
        kwargs_block = 'Kwargs:\n' + ut.indent(kwargs_append)
        func.__doc__ += kwargs_block
        return func
    return _wrp