code: private void setUpNetworkDispatchers() {
          if (networkDispatcherFactory == null) {
              networkDispatcherFactory = new NetworkDispatcher.NetworkDispatcherFactory
                      (networkQueue, network,
                              cache, delivery);
          }
  
          for (int i = 0; i < networkDispatchers.length; i++) {
              networkDispatchers[i] = networkDispatcherFactory.create();
              networkDispatchers[i].start();
              addMarker(EVENT_NETWORK_DISPATCHER_START, networkDispatchers[i]);
  
          }
      }
docs: Create network dispatchers (and corresponding threads) up to the pool size.