@Override
    public boolean isPauseOnLostFocus() {
        return getLostFocusBehavior() == LostFocusBehavior.PauseOnLostFocus;
    }
Get if the application has to pause then it lost the focus.
@return <code>true</code> if pause on lost focus is enabled, <code>false</code> otherwise.
@see #getLostFocusBehavior()
jme3-vr/src/main/java/com/jme3/app/VRApplication.java