IModelReference.IModelChangeEvent (CMS API 15.2.0 API)

Type Parameters:

T - the type of the object for the model

All Superinterfaces:

IEvent<IModelReference<T>>

Enclosing interface:

IModelReference<T>
```
public static interface IModelReference.IModelChangeEvent<T>
extends IEvent<IModelReference<T>>
```
Event that's sent to IObservers of the service. When processing the event, the model service should not receive a new model.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`org.apache.wicket.model.IModel<T>`	`getNewModel()`	The new model of the service.
`org.apache.wicket.model.IModel<T>`	`getOldModel()`	The previous model of the service.

Methods inherited from interface org.hippoecm.frontend.model.event.IEvent
getSource

- Method Detail
  - getOldModel
```
org.apache.wicket.model.IModel<T> getOldModel()
```
    The previous model of the service.
    
    Returns:
    
    the old model
  - getNewModel
```
org.apache.wicket.model.IModel<T> getNewModel()
```
    The new model of the service.
    
    Returns:
    
    the new model