onPostrender property
        
        LifecycleCanvasCallback?
        onPostrender
        
      
final
      Called after the chart is done rendering passing along the canvas allowing a behavior or other listener to render on top of the chart.
This is a convenience callback, however if there is any significant canvas interaction or stacking needs, it is preferred that a AplosView/ChartView is added to the chart instead to fully participate in the view stacking.
Implementation
final LifecycleCanvasCallback? onPostrender;