/**
  * Invoked to update the network
  *
  * @param delta_network An instance of Network.
  * @param virtualNetwork An instance of new virtualNetwork object.
  * @return A HTTP status code to the creation request.
  */
 private int updateNetwork(NeutronNetwork deltaNetwork, VirtualNetwork virtualNetwork)
     throws IOException {
   String networkName = deltaNetwork.getNetworkName();
   virtualNetwork.setName(networkName);
   virtualNetwork.setDisplayName(networkName);
   {
     boolean networkUpdate = apiConnector.update(virtualNetwork);
     if (!networkUpdate) {
       LOGGER.warn("Network Updation failed..");
       return HttpURLConnection.HTTP_INTERNAL_ERROR;
     }
     LOGGER.info(
         "Network having UUID : "
             + virtualNetwork.getUuid()
             + "  has been sucessfully updated...");
     return HttpURLConnection.HTTP_OK;
   }
 }