default Highlight Decorator
The default highlight decorator for this Mark, if you use a custom DatumDecorator you may want to call defaultHighlightDecorator(datum, x, y, drawingZone) to draw the expected sign.
The default highlight decorator for this Mark, if you use a custom DatumDecorator you may want to call defaultHighlightDecorator(datum, x, y, drawingZone) to draw the expected sign.