Android : Generic Method Won't Recognise Generic Type When Passing It as a Parameter

I'm trying to generify dynamic fragment instantiation:

private <F extends Fragment> void addFragment(F fragment) {
    fragment.setArguments(new Bundle());
    FragmentTransaction tx = getFragmentManager().beginTransaction();
    tx.add(R.id.container, fragment);
    tx.submit();
}

However, the compiler rejects tx.add(R.id.container, fragment) because there's no method signature for add(int, F)!

How do I make the add() method understand that F is indeed a Fragment?

Thanks in advance :)