hashCodes.put(classLoader, calculateClassLoaderHash(classPath));
        return classLoader;
    }

    @Override
    protected ClassLoader doCreateFilteringClassLoader(ClassLoader parent, FilteringClassLoader.Spec spec) {
        ClassLoader classLoader = super.doCreateFilteringClassLoader(parent, spec);
        hashCodes.put(classLoader, calculateFilterSpecHash(spec));
        return classLoader;
    }

    @Override

        }
        return doCreateFilteringClassLoader(parent, classLoaderSpec);
    }

    protected ClassLoader doCreateClassLoader(String name, ClassLoader parent, ClassPath classPath) {
        return VisitableURLClassLoader.fromClassPath(name, parent, classPath);
    }

    protected ClassLoader doCreateFilteringClassLoader(ClassLoader parent, FilteringClassLoader.Spec spec) {