VSTalk.Engine.ViewModel.Messenger.ThreadRenderer.Model.ConversationModel.AddBefore C# (CSharp) 메소드

        public void AddBefore(ConversationSection section, ConversationSection point)
        {
            var index = _sections.IndexOf(point);
            _sections.Insert(index, section);
            Document.Blocks.InsertBefore(point.Content, section.Content);
        }