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

```
public interface ElementHookCallback
```
Callback interface of AnnotationPlugin.ID plugin to set beforeDraw and afterDraw properties at runtime, to AbstractAnnotation.

Author:

Andrea "Stock" Stocchero

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void invoke(AnnotationContext context)
  Invoked before and after drawing of annotation element.

- Method Detail
  - invoke
```
void invoke(AnnotationContext context)
```
    Invoked before and after drawing of annotation element.
    
    Parameters:
    
    context - annotation context instance