if( wDesc != null) {
wDesc.setExtensionProperty(WELD_EXTENSION, "true");
// Add the Weld Listener. We have to do it here too in case addWeldListenerToAllWars wasn't
// able to do it.
wDesc.addAppListenerDescriptorToFirst(new AppListenerDescriptorImpl(WELD_LISTENER));
// Add Weld Context Listener - this listener will ensure the WeldELContextListener is used
// for JSP's..
wDesc.addAppListenerDescriptor(new AppListenerDescriptorImpl(WELD_CONTEXT_LISTENER));
// Adding Weld ConverstationFilter if there is filterMapping for it and it doesn't exist already.
// However, it will be applied only if web.xml has mapping for it.