public async Task <IHttpActionResult> GetAll(string moniker, bool includeSpeakers = false)
        {
            try
            {
                if (("all").Equals(moniker))
                {
                    var results = await _repository.GetAllTalksAsync(includeSpeakers);

                    return(Ok(_mapper.Map <IEnumerable <TalkModel> >(results)));
                }

                return(NotFound());
            }
            catch (Exception e)
            {
                return(InternalServerError(e));
            }
        }