code: public void addNetwork(Network network, NetworkInfo networkInfo) {
      ShadowNetwork shadowNetwork = Shadow.extract(network);
      int netId = shadowNetwork.getNetId();
      netIdToNetwork.put(netId, network);
      netIdToNetworkInfo.put(netId, networkInfo);
    }
docs: Adds new {@code network} to the list of all {@link android.net.Network}s.
  
  @param network The network.
  @param networkInfo The network info paired with the {@link android.net.Network}.