@Override
    public void cleanup() {
        super.cleanup();

        if (inputManager.hasMapping(INPUT_MAPPING_CAMERA_POS)) {
            inputManager.deleteMapping(INPUT_MAPPING_CAMERA_POS);
        }
        if (inputManager.hasMapping(INPUT_MAPPING_MEMORY)) {
            inputManager.deleteMapping(INPUT_MAPPING_MEMORY);
        }
        
        inputManager.removeListener(keyListener);
    }
Registers a few keys that will dump debug information
 to the console.

 @author    Paul Speed
jme3-core/src/main/java/com/jme3/app/DebugKeysAppState.java