[ovirt-devel] GWT/Frontent - Looking for convinient way to seperate the "data" from "presentation" in combo boxes

HI all, If you look at this link - http://www.w3schools.com/tags/tag_select.asp It shows a selection in which you have a differentiation between the displayable value, and the "data" value (which will be sent as the "selected value"). How can I do the same in GWT? At ListModel for example I saw methods only to add items. Thanks, Yair