{"ast_node_type":"variable","tokens":[{"end":93,"kind":"keyword","start":0,"text":"let"}]}
                let container_id = cx.current_expansion.id.expn_data().parent.expect_local();
            | ItemKind::Enum(_, Generics { params, .. }, _) => {
                let has_derive_copy = cx.resolver.has_derive_copy(container_id);