code: function resetTracker() {
  			var hoverSeries = chart.hoverSeries,
  				hoverPoint = chart.hoverPoint;
  
  			if (hoverPoint) {
  				hoverPoint.onMouseOut();
  			}
  
  			if (hoverSeries) {
  				hoverSeries.onMouseOut();
  			}
  
  			if (tooltip) {
  				tooltip.hide();
  			}
  
  			hoverX = null;
  		}
docs: Reset the tracking by hiding the tooltip, the hover series state and the hover point