public void testGetAuNullConfig() throws ArchivalUnit.ConfigurationException {
   try {
     plugin.configureAu(null, null);
     fail("Didn't throw ArchivalUnit.ConfigurationException");
   } catch (ArchivalUnit.ConfigurationException e) {
   }
 }
 private DefinableArchivalUnit makeAuFromProps(Properties props)
     throws ArchivalUnit.ConfigurationException {
   Configuration config = ConfigurationUtil.fromProps(props);
   return (DefinableArchivalUnit) plugin.configureAu(config, null);
 }