public IActionResult Append(string wordToAppendTo)
 {
     if (wordToAppendTo != null)
     {
         AppendDTO app = new AppendDTO {
             Appended = act.AppendA(wordToAppendTo)
         };
         return(Json(app));
     }
     else
     {
         ErrorDTO error = new ErrorDTO {
             Error = act.ThrowError()
         };
         return(Json(error));
     }
 }