public async Task <IActionResult> PutConference(int id, EventDTO.Conference input)
        {
            var conference = await _db.FindAsync <Data.Conference>(id);

            if (conference == null)
            {
                return(NotFound());
            }

            conference.Name = input.Name;

            await _db.SaveChangesAsync();

            return(NoContent());
        }
        public async Task <ActionResult <ConferenceResponse> > CreateConference(EventDTO.Conference input)
        {
            var conference = new Data.Conference
            {
                Name = input.Name
            };

            _db.Conferences.Add(conference);
            await _db.SaveChangesAsync();

            var result = new EventDTO.ConferenceResponse
            {
                ID   = conference.ID,
                Name = conference.Name
            };

            return(CreatedAtAction(nameof(GetConference), new { id = conference.ID }, result));
        }