{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":")"}]}
    ) -> (ty::FnSig<'tcx>, ty::InstantiatedPredicates<'tcx>) {
        all_args: GenericArgsRef<'tcx>,
        debug!("instantiate_method_sig(pick={:?}, all_args={:?})", pick, all_args);