apache port knobs - WITH_APACHE2 deprecated?

[Jonathan McKeown]

This is (I hope) a quick and easy question.

I want to ensure that any ports which depend on Apache will depend on 2.0 
rather than try to bring in 1.3.

I used to do this by putting WITH_APACHE2 in /etc/make.conf.

bsd.apache.mk says WITH_APACHE2 is deprecated.

What is it deprecated in favour of, or is that a secret?

(Sorry for the snarky tone but I've spent most of today trying to find a clear 
answer).

Jonathan