public async Task <ActionResult <IEnumerable <AttendeeRegistrationResponseDto> > > GetAllAttendees() { var allItems = await attendeeRepository.GetAllAsync(); if (allItems == null) { return(StatusCode(StatusCodes.Status404NotFound, "No Attendees Found")); } return(StatusCode(StatusCodes.Status200OK, allItems.Select(item => item.AsResponseDto()))); }