public async Task <HttpResponseMessage> GetPotvrdenoAsync()
 {
     try
     {
         var response = Mapper.Map <IEnumerable <KorisnikViewModel> >(await korisnikService.GetPotvrdenoAsync());
         return(Request.CreateResponse(HttpStatusCode.OK, response));
     }
     catch (Exception e)
     {
         return(Request.CreateErrorResponse(HttpStatusCode.NotFound, e));
     }
 }