@Override
protected void doBeforeActivate() throws Exception {
super.doBeforeActivate();
checkState(delegate, "delegate");
}
@Override
protected void doActivate() throws Exception {
super.doActivate();
LifecycleUtil.activate(delegate);
}
@Override
protected void doDeactivate() throws Exception {
LifecycleUtil.deactivate(delegate);
super.doDeactivate();
}
