{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"//"}]}
        // A `macro_rules!` invocation may pass a captured item/expr to a proc-macro,
    pub fn parse_nonterminal(&mut self, kind: NonterminalKind) -> PResult<'a, ParseNtResult> {
        // which requires having captured tokens available. Since we cannot determine