static SpeakerRepository()
        {
            var speaker1 = new Speaker
            {
                Id = Guid.NewGuid(),
                FirstName = "Jimmy",
                LastName = "Bogard",
                PictureUrl = "/content/jimmy.png",
                Bio = "Jimmy is a senior consultant at Headspring Systems in Austin, TX.",
                UrlKey = "jimmy-bogard"
            };
            var speaker2 = new Speaker
            {
                Id = Guid.NewGuid(),
                FirstName = "Jeffrey",
                LastName = "Palermo",
                PictureUrl = "/content/jeffrey.jpg",
                Bio = "Jeffrey Palermo is a Microsoft MVP and Chief Technology Officer of Headspring Systems in Austin, TX.",
                UrlKey = "jeffrey-palermo"
            };
            var speaker3 = new Speaker
            {
                Id = Guid.NewGuid(),
                FirstName = "Ben",
                LastName = "Scheirman",
                PictureUrl = "/content/ben3.png",
                Bio = "Ben Scheirman is a Microsoft MVP and Director of Development at ChaiONE in Houston, TX.",
                UrlKey = "ben-scheirman"
            };

            AddSpeaker(speaker3);
            AddSpeaker(speaker1);
            AddSpeaker(speaker2);
        }
 private static void AddSpeaker(Speaker speaker)
 {
     _speakers.Add(speaker.Id, speaker);
 }