{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"ret.extend(params.iter().filter_map(|p|"}]}
            ret.extend(params.iter().filter_map(|p| {
            };
                let hir::GenericParamKind::Lifetime { kind: hir::LifetimeParamKind::Explicit } =