@Override public boolean isUpgradeFinalized() throws IOException { IsUpgradeFinalizedRequestProto req = IsUpgradeFinalizedRequestProto .newBuilder().build(); try { IsUpgradeFinalizedResponseProto response = rpcProxy.isUpgradeFinalized( NULL_CONTROLLER, req); return response.getIsUpgradeFinalized(); } catch (ServiceException e) { throw ProtobufHelper.getRemoteException(e); } }