Filter (Support SDK - v510)

```
public interface Filter<E>
```
Interface that gets called before notifying a Listener. It can decide if the update will be passed along or not.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`boolean`	`filter(E oldState, E newState)` Decide whether to pass the update to the associated `Listener`

- Method Detail
  - filter
```
boolean filter(E oldState,
               E newState)
```
    Decide whether to pass the update to the associated Listener
    
    Parameters:
    
    oldState - old state
    
    newState - new state
    
    Returns:
    
    true if the component or listener should be notified, false otherwise