...
public void Startup(NetworkService service) {
   Debug.Log("Uruchomienie menedżera prognozy pogody...");

   _network = service;
   StartCoroutine(_network.GetWeatherXML(OnXMLDataLoaded));

   status = ManagerStatus.Initializing;   
}

public void OnXMLDataLoaded(string data) {   
   Debug.Log(data);

   status = ManagerStatus.Started;
}
...
