Function __action70

fn __action70(
    cx: &mut ParseCtxt<'_>,
    (_, _, _): (Location, Token, Location),
    (_, ty, _): (Location, Ty, Location),
    (_, _, _): (Location, Token, Location),
    (_, len, _): (Location, ConstArg, Location),
    (_, _, _): (Location, Token, Location),
) -> Result<TyKind, ParseError<Location, Token, UserParseError>>