public string SaveBelegPositionenAV(BelegPositionAVDTO position)
 {
     if (Login())
     {
         return(Put <string>("BelegPositionenAV", position));
     }
     return("Not logged in");
 }
 public async Task <string> SaveBelegPositionenAVAsync(BelegPositionAVDTO position)
 {
     return(await Task.Run(() => SaveBelegPositionenAV(position)));
 }