Android auto complete support

Hi,
the page for the Android plugin states Idea supports auto complete in layouts.

I'm creating an image button, and I type

<ImageButton src="<Ctrl-Space>

I'd expect the ctrl-space to give me auto complete for @drawable and then /myImage. It doesn't do it.

This functionality is available in Motodev Studio and is very handy.

Is that supported? Am I using the wrong key combo? If so, what is it? (Still trying to learn all the key combos...)