public ActionResult <List <TagOutputModel> > GetTagsWhichAreNotInTest(int testId) { Mapper mapper = new Mapper(); AuthorDataAccess tags = new AuthorDataAccess(); var test = tags.GetTestById(testId); if (test == null) { return(BadRequest("Теста не существует")); } return(Ok(mapper.ConvertTagDTOToTagModelList(tags.GetTagsWhichAreNotInTest(testId)))); }