code: private void reconstituteNetwork(final File file) {
  
          BinaryProtoNetworkDescriptor inputProtoNetworkDesc =
                  new BinaryProtoNetworkDescriptor(file);
          ProtoNetworkExternalizer pne = new BinaryProtoNetworkExternalizer();
          ProtoNetwork global = null;
  
          try {
              global = pne.readProtoNetwork(inputProtoNetworkDesc);
          } catch (ProtoNetworkError e) {
              error(e.getUserFacingMessage());
              final ExitCode ec = ExitCode.NO_GLOBAL_PROTO_NETWORK;
              exit(ec);
          }
  
          processNetwork(global);
      }
docs: /*
  Reconstitutes the global proto-network.