protected BaseCollectionManager(string username, string password)
     : base(username, password)
 {
     _username = username;
     _password = password;
     _tweets   = new SortedTweetCollection <T>();
 }
 public BaseCollectionManager(ITwitterClient twitterApiClient)
 {
     _twitterApiClient = twitterApiClient;
     _tweets           = new SortedTweetCollection <T>();
 }