public async Task <IActionResult> PutParticipant(int id, PublicApi.v1.DTO.Participant participant)
        {
            if (id != participant.Id)
            {
                return(BadRequest());
            }

            _bll.Participant.Update(PublicApi.v1.Mappers.ParticipantMapper.MapFromExternal(participant));
            await _bll.SaveChangesAsync();

            return(NoContent());
        }
        public async Task <ActionResult <PublicApi.v1.DTO.Participant> > PostParticipant(
            PublicApi.v1.DTO.Participant participant)
        {
            await _bll.Participant.AddAsync(PublicApi.v1.Mappers.ParticipantMapper.MapFromExternal(participant));

            await _bll.SaveChangesAsync();

            return(CreatedAtAction(nameof(GetParticipant), new
            {
                version = HttpContext.GetRequestedApiVersion().ToString(),
                id = participant.Id
            }, participant));
        }