weld/subsystem/src/main/java/org/jboss/as/weld/services/ModuleGroupSingletonProvider.java
public static void addClassLoaders(ClassLoader topLevel, Set<ClassLoader> allClassLoaders) {
        deploymentClassLoaders.put(topLevel, allClassLoaders);
    }
public static void addClassLoaders(ClassLoader topLevel, Set<ClassLoader> allClassLoaders) {
        deploymentClassLoaders.put(topLevel, allClassLoaders);
    }
Maps a top level class loader to all CL's in the deployment