Read the
help page in the Directory
and the
book chapter on add-ons
.
In general, if using add-ons with client side parts, you should always have your own widgetset, import any add-on widgetsets you need in it and compile your own widgetset. An application can only use one widgetset, which needs to include all the widgets you need. Using the widgetset “fragment” that is in the add-on might be problematic in some cases, and makes it hard to take other add-ons into use.