{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"(ty::Slice(a_ty),"}]}
                (ty::Slice(a_ty), ty::Slice(b_ty)) => {
                }
                    structurally_same_type_impl(seen_types, tcx, typing_env, *a_ty, *b_ty, ckind)