1. Create a JSF 1.2 project: JSFProject
2. Create a java project: JavaProject
3. Add the resource bundle to the JavaProject/src/demo/labels.properties
4. Add some properties to this resource bundle
5. Add the following reference to the faces-config.xml:

<application>
  <resource-bundle>
  	<base-name>demo.labels</base-name>
  	<var>labels</var>
  </resource-bundle>
  ...
</application>

6. Add JavaProject to the classpath of JSFProject
7. Open any xhtml file in JSFProject
8. Try Ctrl+Space on

#{labels.|}

9. FAILURE: There is no any property available via code assist.
10. Move the labels.properties to JSFProject source folder.
11. FAILURE: Code completion for labels is still not working.
12. Edit and save labels.properties (in JSFProject)
13. Code completion is working.