GuiUpdateListener (lemur 1.15.0 API)

```
public interface GuiUpdateListener
```
Can be registered with a GuiControl to receive frame update notifications as part of the GuiControl's controlUpdate().

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`guiUpdate(GuiControl source, float tpf)`

void guiUpdate(GuiControl source,
               float tpf)

Interface GuiUpdateListener