{"ast_node_type":"variable","tokens":[{"end":24,"kind":"keyword","start":0,"text":"let"}]}
            let typeid =
        if let Some(trait_ref) = dyn_trait_in_self(bx.tcx(), ty) {
                bx.typeid_metadata(typeid_for_trait_ref(bx.tcx(), trait_ref).as_bytes()).unwrap();