// GET: Presentations
        public async Task <IActionResult> Index()
        {
            var currentSpeaker = await _speakerRepository.GetSpeakerBySpeakerEmailIncludingRelationshipsAsync(HttpContext.User.Identity.Name);

            //var presentations = await _presentationRepository.GetAllPresentationsAsync();
            var presentationViewModels = _presentationViewModelMapper.MapFromPresentations(currentSpeaker.OwnedPresentations);

            if (presentationViewModels == null)
            {
                return(View("NoPresentation"));
            }

            return(View(presentationViewModels));
        }