pub fn fallible_with<'slice, 'src: 'slice, Lang: Language, E, IE>(
parser: impl Parser<Input<'slice, 'src, Lang>, Children<Lang, E>, IE>,
convert: impl FnMut(IE) -> E,
) -> impl FnMut(Input<'slice, 'src, Lang>) -> IResult<'slice, 'src, Lang, E, IE>where
Lang::Kind: 'static,