use GwtCreateResource to provide text programatically

I would like my uiBinder to use a ClientBundle which will provide some runtime customized labels. Kind of a TextResource but not from a text file !
I tried with GwtCreateResource but from the DevGuide it seems like it's not possible. Am I right ? (create() and name() are the only methods available) What I would like to achieve is something like this:

client bundle:

public interface MyWidgetResources extends ClientBundle {      GwtCreateResource<WidgetLabels> labels();        @Source("lol.css")      CssResource style();  }  

labels class:

public final class MyWidgetLabels {      public String title() {          return load("mywidget-title");      }        public String banner() {          return load("mywidget-banner");      }        private String load(String key) {          // load from external..      }  }  

uiBinder:

<ui:with type="com.package.MyWidgetResources" field="res"/>    <gwt:SimplePanel>      <gwt:Label text="{res.labels.title}"></gwt:Label>      <gwt:Label text="{res.labels.banner}"></gwt:Label>  </gwt:SimplePanel>  

My code looks like this already but res.label.title does not work. I could try to first store a reference to res.labels.create but it seems like I can't access any methods of labels in my uiBinder.

Is there a solution for me ? Maybe with a custom ResourceGenerator ? In this case some more pointers would be welcomed because i didn't really catch how that worked...

Thanks !

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