This is the 3rd version of SwingWorker (also known as
SwingWorker 3), an abstract class that you subclass to
perform GUI-related work in a dedicated thread.
Deprecated.Don't use this method because the behavior of the
input GraphPerspective with respect to changing meta-children of
this Node is ill-defined; use RootGraph.addNodeMetaChild(int, int) and
RootGraph.addEdgeMetaChild(int, int) instead.
Set a new shape for the Node, based on one of the pre-defined shapes
Note: calling setPathTo( Shape ), allows one to define their own
java.awt.Shape ( i.e.