public void visit( Graphic gr ) {
List<GraphicalSymbol> graphicalSymbols = gr.graphicalSymbols();
for( GraphicalSymbol graphicalSymbol : graphicalSymbols ) {
if (graphicalSymbol instanceof ExternalGraphic) {
ExternalGraphic ext = (ExternalGraphic) graphicalSymbol;
ext.accept(this);
}
}
}
public void visit( Mark mark ) {}