Set request in WicketTester

[nate roe]

I'm using Wicket 1.2.

I'm using WicketTester, but my Page requires certain request headers.  What
is the appropriate way to add headers to the MockHttpServletRequest (via
addHeaders(...) I assume) before the Page is rendered?

I tried:
        tester.getServletRequest().addHeader("host", "www.myhost.com");
        tester.startPage(MyPage.class);
        tester.assertRenderedPage(MyPage.class);

but that doesn't work; request.getHeader("host") returns null in
MyPage.onAfterRender().

Thanks,
Nate