ISingletonModelStoreChangeHandler 5.4.2 API

```
public interface ISingletonModelStoreChangeHandler<TModel extends Model>

                    
```
A handler interface for ISingletonModelStore.subscribe. Implement this interface to subscribe to model change events for a specific model store.

Method Summary

Modifier and Type	Method	Description
`abstract Unit`	`onModelReplaced(TModel model, String tag)`	Called when the model has been replaced.
`abstract Unit`	`onModelUpdated(ModelChangedArgs args, String tag)`	Called when a property within the model has been updated.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - onModelReplaced
```
 abstract Unit onModelReplaced(TModel model, String tag)
```
    Called when the model has been replaced.
    
    Parameters:
    
    model - The model
    
    tag - The tag which identifies how/why the model was replaced.
  - onModelUpdated
```
 abstract Unit onModelUpdated(ModelChangedArgs args, String tag)
```
    Called when a property within the model has been updated. This callback wraps IModelChangedHandler.onChanged so users of the model store does not need to manage subscriptions to the individual Model within the store.
    
    Parameters:
    
    args - The model changed arguments.
    
    tag - The tag which identifies how/why the model was updated.