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

```
public interface CloseHandler
```
Callback interface of Toaster utility to be notified of toast item closing.
It receives also the action which closed the toast or null if the toast has been closed naturally.

Author:

Andrea "Stock" Stocchero

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onClose(ToastItem item, ActionItem action)
  Invoked to be notified of toast item closing.

- Method Detail
  - onClose
```
void onClose(ToastItem item,
             ActionItem action)
```
    Invoked to be notified of toast item closing.
    
    Parameters:
    
    item - toast item affected
    
    action - action which closed the toast or null if the toast has been closed naturally.