public UnitSolverDialog(DialogTableau dialogTableau, Frame owner,
Entity target, Configuration configuration) {
super("Solve units for " + target.getName(), dialogTableau, owner,
target, configuration);
SelectionRenderer tempSelectionRenderer = null;
_tableau = ((TableauFrame) owner).getTableau();
_model = (TypedCompositeActor) target;
// ((TypedCompositeActor) (((PtolemyEffigy) (_tableau.getContainer()))