public static TwitterStreamingListener GetInstance(ITweetsRepository repository)
 {
     if (_instance == null)
     {
         _instance = new TwitterStreamingListener(repository);
     }
     return _instance;
 }
 public static TwitterStreamingListener GetInstance(ITweetsRepository repository)
 {
     if (_instance == null)
     {
         _instance = new TwitterStreamingListener(repository);
     }
     return(_instance);
 }
 public TwitterAccessService()
 {
     factory    = new RepositoryFactory();
     repository = factory.GetTwitterRepository();
     listener   = TwitterStreamingListener.GetInstance(repository);
 }