public IEnumerable <MasterViewModel> GetAllMasters()
        {
            IEnumerable <MasterDTO> temp = studioService.GetAllMasters();
            var mapper  = new MapperConfiguration(cfg => cfg.CreateMap <MasterDTO, MasterViewModel>()).CreateMapper();
            var masters = mapper.Map <IEnumerable <MasterDTO>, List <MasterViewModel> >(temp);

            return(masters);
        }