code: function hover(event) {
      var payload = context.payload;
  
      payload.hoverGfx = event.gfx;
      payload.hover = event.element;
  
      fire('hover');
    }
docs: update the drag events hover (djs.model.Base) and hoverGfx (Snap<SVGElement>) properties during hover and out and fire {prefix}.hover and {prefix}.out properties respectively