public class ConnectionNodesVisual extends Connection {
	
	public static class ArrowHead extends Polygon {
		public ArrowHead() {
			super(0, 0, 10, 3, 10, -3);
		}
	}
	
	public ConnectionNodesVisual() {
		ArrowHead endDecoration = new ArrowHead();
		endDecoration.setFill(Color.BLACK);
		setEndDecoration(endDecoration);
	}

}

		GeometryNode<IGeometry> geometry =  (GeometryNode<IGeometry>) getCurve();

		geometry.getStrokeDashArray().addAll(2d,21d);
		geometry.setStrokeWidth(5);
		geometry.setStroke(Color.GREY);