{"ast_node_type":"function","tokens":[{"end":73,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn parse_literal_maybe_minus(&mut self) -> PResult<'a, P<Expr>> {
    /// Keep this in sync with `Token::can_begin_literal_maybe_minus`.
        if let Some(expr) = self.eat_metavar_seq_with_matcher(