public BcfInstanceViewModel(BcfInstance instance)
 {
     _instance = instance;
     if (_instance != null)
     {
         TopicTitle         = instance.Markup.Topic.Title;
         TopicReferenceLink = instance.Markup.Topic.ReferenceLink;
     }
     GoCam   = new GoCamera(this);
     _addCmt = new AddCommentCommand(this);
 }
 public BcfInstanceViewModel(BcfInstance instance)
 {
     _instance = instance;
     if (_instance != null)
     {
         TopicTitle = instance.Markup.Topic.Title;
         TopicReferenceLink = instance.Markup.Topic.ReferenceLink;
     }
     GoCam = new GoCamera(this);
     _addCmt = new AddCommentCommand(this);
 }