for (File file : extClassPath) {
                slf4jLogger.debug("  included '{}'", file);

                extRealm.addURL(file.toURI().toURL());
            }

            for (CoreExtensionEntry entry : reverse(extensions)) {
                Set<String> exportedPackages = entry.getExportedPackages();
                ClassRealm realm = entry.getClassRealm();