* System scope.
     */
    SYSTEM("system", false);

    private static final Map<String, DependencyScope> IDS = Collections.unmodifiableMap(
            Stream.of(DependencyScope.values()).collect(Collectors.toMap(s -> s.id, s -> s)));

    public static DependencyScope forId(String id) {
        return IDS.get(id);
    }

    private final String id;
    private final boolean transitive;