DrilldownCallback (Vaadin Charts 23.6-SNAPSHOT API)

All Superinterfaces:

Serializable
```
public interface DrilldownCallback
extends Serializable
```
Handler interface for chart's drilldown callbacks.
DrilldownCallback is used for async drilldown.
handleDrilldown(DrilldownDetails) is called when a point with drilldown enabled is clicked and needs to return the Series to be used as drilldown for the point.
To enable async drilldown for a series item use DataSeries.addItemWithDrilldown(com.vaadin.flow.component.charts.model.DataSeriesItem)

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class DrilldownCallback.DrilldownDetails

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Series`	`handleDrilldown(DrilldownCallback.DrilldownDetails event)`	Method called when a point with drilldown enabled is clicked and should return the Series to be used as drilldown for the point.

- Method Detail
  - handleDrilldown
```
Series handleDrilldown(DrilldownCallback.DrilldownDetails event)
```
    Method called when a point with drilldown enabled is clicked and should return the Series to be used as drilldown for the point.
    
    Parameters:
    
    event -
    
    Returns:
    
    a Series instance to be used as drilldown for the point or null if nothing should be done