This is good, but again I meant to show an actual example data-item and an example render-item, for example with a job title like "software engineer".  I guess you should use the same example here and in the store doc.

Actually, the code above is confusing because you have both jobtitleAttr and jobtitleFunc, yet neither one has a value.   I guess you are trying to show something advanced: how an app can specify jobtitleAttr and jobTitleFunc in the markup rather than in the widget definition.   But how about a simple example first, where the widget definition defines the mapping?