The second Tree Model example

This section makes use of the same example as for the IlvAbstractSDMModel variant, which involves adapting a Swing JTree model to an SDM model. Therefore, for a description of the common parts, see the subsections of that example as follows:
The remaining subsections that follow describe the data model implementation for this variant.
The example is supplied with Rogue Wave® JViews Diagrammer in the directory <installdir>/jviews-diagrammer89/codefragments/datamodel/treemodel2.