private static void ChangeLanguage(Language lang)       // Maybe async?
 {
     if (_providerDictionary.ContainsKey(lang))
     {
         Provider        = _providerDictionary[lang];
         CurrentLanguage = lang;
         TradeClient.FetchAPIData().Wait();
     }
     else
     {
         throw new Exception("Language not implemented yet");
     }
 }