add_propertyChanged(function(sender, e))
propertyChanged.add(function(sender, e))
remove_propertyChanged(function(sender, e))
propertyChanged.remove(function(sender, e))
    
            
        
            This event is for internal use.
| Parameter | Type | Description | 
|---|---|---|
| sender | 'var' | The source of the event. | 
| e | AnnPropertyChangedEventArgs | The event data. |