{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"tcx.fn_sig(item.def_id).instantiate_identity().skip_binder().inputs().get(0);"}]}
                tcx.fn_sig(item.def_id).instantiate_identity().skip_binder().inputs().get(0);
            let first_input =
            let (first_arg_type, rcvr_ref) = (