{"ast_node_type":"other","tokens":[{"end":31,"kind":"keyword","start":0,"text":")"}]}
    ) -> PResult<'a, P<Expr>> {
        f: impl FnOnce(&mut Self, ast::AttrVec) -> PResult<'a, P<Expr>>,
        self.collect_tokens(None, attrs, ForceCollect::No, |this, attrs| {