@Override
@NotNull
protected JFrame createFrame() {
JFrame frame = super.createFrame();
Graph2D graph2D = new Graph2DPresenter().present( rootNode );
Graph2DView graph2DView = new Graph2DView( graph2D );
graph2DView.addViewMode( new NavigationMode() );
graph2DView.fitContent();
frame.getContentPane().add( graph2DView );