public async Task <string> GetOs() { _eventLogRepository.Insert(new EventLogModule { EventID = 1, Exception = "", LogLevel = "Information", Message = "test by Rico" }); await _eventLogRepository.InsertAsync(new EventLogModule { EventID = 2, Exception = "", LogLevel = "Information", Message = "test by Rico" }); _eventLogRepository.BulkInsert( new[] { new EventLogModule { EventID = 3, Exception = "", LogLevel = "Information", Message = "test by Rico" }, new EventLogModule { EventID = 4, Exception = "", LogLevel = "Information", Message = "test by Rico" } }); await _eventLogRepository.BulkInsertAsync( new[] { new EventLogModule { EventID = 5, Exception = "", LogLevel = "Information", Message = "test by Rico" }, new EventLogModule { EventID = 6, Exception = "", LogLevel = "Information", Message = "test by Rico" } }); return(System.Runtime.InteropServices.RuntimeInformation.OSDescription); }