{"ast_node_type":"other","tokens":[{"end":28,"kind":"keyword","start":0,"text":"//"}]}
            // restrictions.
            // We need to distinguish `|...| {}` from `for<> |...| {}` as `for<>` adds additional
            hir::ClosureBinder::For { .. } if generic_params.is_empty() => self.word("for<>"),