&& (!isFamily(FAMILY_MAC, actualOsName) || actualOsName.endsWith("x"));
            case FAMILY_ZOS:
                return actualOsName.contains(FAMILY_ZOS) || actualOsName.contains(FAMILY_OS390);
            case FAMILY_OS400:
                return actualOsName.contains(FAMILY_OS400);
            case FAMILY_OPENVMS:
                return actualOsName.contains(FAMILY_OPENVMS);

                // j2ee types
                new DefaultType("ejb", Language.JAVA_FAMILY, "jar", null, false, JavaPathType.CLASSES),
                new DefaultType("ejb-client", Language.JAVA_FAMILY, "jar", "client", false, JavaPathType.CLASSES),
                new DefaultType("war", Language.JAVA_FAMILY, "war", null, true),

        }

        boolean result = actualName.equals(test);

        return reverse != result;
    }

    private boolean determineFamilyMatch(String family, String actualName) {
        String test = family;
        boolean reverse = false;

        if (test.startsWith("!")) {
            reverse = true;
            test = test.substring(1);
        }

            implements LanguageRegistry {

        @Inject
        public DefaultLanguageRegistry(List<LanguageProvider> providers) {
            super(providers, Language.NONE, Language.JAVA_FAMILY);
        }
    }

    static class DefaultExtensibleEnumRegistry<T extends ExtensibleEnum, P extends ExtensibleEnumProvider<T>>
            implements ExtensibleEnumRegistry<T> {

                .build();
        ActivationOS ao = ActivationOS.newBuilder()
                .arch("arch" + Long.toHexString(entropy.nextLong()))
                .family("family" + Long.toHexString(entropy.nextLong()))
                .name("name" + Long.toHexString(entropy.nextLong()))
                .version("version" + Long.toHexString(entropy.nextLong()))
                .build();

            implements LanguageRegistry {

        @Inject
        public DefaultLanguageRegistry(List<LanguageProvider> providers) {
            super(providers, Language.NONE, Language.JAVA_FAMILY);
        }
    }

    public abstract static class DefaultExtensibleEnumRegistry<
                    T extends ExtensibleEnum, P extends ExtensibleEnumProvider<T>>
            implements ExtensibleEnumRegistry<T> {

        if (reverse) {
            return !result;
        } else {
            return result;
        }
    }

    private boolean determineFamilyMatch(String family) {
        String test = family;
        boolean reverse = false;

        if (test.startsWith("!")) {
            reverse = true;
            test = test.substring(1);
        }

    /**
     * The "none" language. It is not versioned, family is same to itself, and compatible with itself only.
     * In turn, every {@link Language} implementation must be compatible with {@code NONE} language.
     */
    Language NONE = language("none");

    // TODO: this should be moved out from here to Java Support (builtin into core)
    Language JAVA_FAMILY = language("java");