Does anyone know if the 270 EX II can be used for AF assist on the EOS 5d?

[digital]

I checked the manual at Canon USA. This is waht it says.

AF Assist Beam 
Intermittent flash firing system

http://www.usa.canon.com/cusa/consumer/products/cameras/speedlite_flash_lineup/speedlite_270ex_ii#Sp...

[digital]

From the manual