{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"for"}]}
        for (i, &param_ty) in fn_sig.inputs().iter().enumerate() {
        let predicates = cx.tcx.predicates_of(def_id).instantiate_identity(cx.tcx).predicates;
            if let ty::Param(sig_param) = param_ty.kind() {