LeaveCallback (Charba - J2CL and GWT charts library based on CHART.JS)

```
public interface LeaveCallback
```
Callback interface of AnnotationPlugin.ID plugin that is called once leave is fired.

Author:

Andrea "Stock" Stocchero

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`onLeave(AnnotationContext context, ChartEventContext event)`	Method called once leave is fired.

- Method Detail
  - onLeave
```
boolean onLeave(AnnotationContext context,
                ChartEventContext event)
```
    Method called once leave is fired.
    
    Parameters:
    
    context - context instance
    
    event - event instance
    
    Returns:
    
    if true, it will ask to Chart.js to redraw