This converter converts a null value to a localised text from i3-label. The usage is simple. Either make your own subclass and initialise the label name in the constructor, or use it:
<listcell label="@{listEach.text,save=false,converter=NullToLabelConverter,nullLabel=some.i3label.property}" />
Released under the Poetic License. Post a comment here or under my blog post, if you have some suggestion. Thanks.