Events & Logic - Item.ui.xml - Missing description style

[99sono]

In the events & logic section, the Item.ui.xml is missing a css style referred by the main body of the widget template.

It leads to the following compilation error:

Compiling module org.gwtproject.tutorial.TodoList
Computing all possible rebind results for 'org.gwtproject.tutorial.client.Item.ItemUiBinder'
Rebinding org.gwtproject.tutorial.client.Item.ItemUiBinder
Invoking generator com.google.gwt.uibinder.rebind.UiBinderGenerator
[ERROR] Could not find no-arg method named description in type com.google.gwt.resources.client.CssResource
[ERROR] Errors in 'org/gwtproject/tutorial/client/Item.java'
[ERROR] Line 28: Failed to resolve 'org.gwtproject.tutorial.client.Item.ItemUiBinder' via deferred binding
Unification traversed 1026 fields and methods and 325 types. 21 are considered part of the current module and 21 had all of their fields and methods traversed.
[ERROR] Compiler returned false

The style is required by the following element.

<div ui:field="description" class='{style.description}'></div>

Kind regards.