Code Outlining - Ranged Based

multiLineCommentDefinition.DefaultCollapsedContent = "/**/";

public class PostOutliner : PostOutliningNodeDefinition, IOutliner
    {
    }

public class PostOutliningNodeDefinition : OutliningNodeDefinition
    {
        public PostOutliningNodeDefinition()
            : base("PostOutliningNodeDefinition")
        {

        }

        /// <summary>
        /// Returns the content that should be displayed when the outlining node is collapsed.
        /// </summary>
        /// <param name="node">The <see cref="IOutliningNode"/>, based on this definition, for which content is requested.</param>
        /// <returns>The content that should be displayed when the outlining node is collapsed.</returns>
        /// <remarks>
        /// Only string-based content is currently supported.
        /// The default implementation of this method returns the value of the <see cref="DefaultCollapsedContent"/> property.
        /// This method can be overridden to generate unique collapsed content for a particular node.
        /// </remarks>
        public override object GetCollapsedContent(IOutliningNode node)
        {
            // Get the node's snapshot range
            TextSnapshotRange snapshotRange = node.SnapshotRange;

            // If the comment is over multiple lines...
            if (snapshotRange.StartPosition.Line < snapshotRange.EndPosition.Line)
            {
                // Use the text in the first line
                int lineEndOffset = snapshotRange.StartLine.EndOffset;
                return snapshotRange.Snapshot.GetSubstring(new TextRange(snapshotRange.StartOffset, lineEndOffset)) + "...";
            }
            else
            {
                // On a single line... use default collapsed content
                return this.DefaultCollapsedContent;
            }
        }

    }