Asset.getClientURL() throws NPE if the Asset is a Folder within a SubModule JAR file

If you inject in a Field an Asset and if this Asset is actually a Folder that is embedded into a JAR SubModule used by the main Tapestry WebApp then the method toClientURL() returns a NPE.

The issue does not happen when the SubModule is not yet a JAR file. Exemple : when you are running Tomcat from Eclipse and let Eclipse manage the dependency ( I am using the Sysdeo plugin to add dependencies to the source folders of the SubModule instead of the JAR file. ).