void Apply(AddedNewCommentEvent @event) { var comment = new LessonComment() { Id = @event.CommentId, AuthorId = @event.AuthorId, Content = @event.Content, CreationDate = @event.Date, LastModifDate = @event.Date, ParentId = @event.ParentId, Level = @event.Level, RecordState = Constants.RECORD_STATE_ACTIVE }; Comments.Add(comment); }