{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"(clif_type_from_ty(tcx,"}]}
            (clif_type_from_ty(tcx, types[0])?, clif_type_from_ty(tcx, types[1])?)
        ty::Tuple(types) if types.len() == 2 => {
        }