public async Task Execute(MLLAddMessage message)
 {
     try
     {
         var req = GetRequest(message);
         await HttpClientLib.Post(req);
     }
     catch (Exception e)
     {
         throw;
     }
 }
 public async Task <AccessTokensJson> Execute(string code)
 {
     try
     {
         var req = GetRequest(code);
         return(await HttpClientLib.Post <AccessTokensJson, ErrorJson>(req));
     }
     catch (Exception e)
     {
         throw;
     }
 }