.collect(Collectors.toUnmodifiableMap(t -> t.id().toLowerCase(Locale.ROOT), t -> t));
        }

        @Override
        public Optional<T> lookup(String id) {
            return Optional.ofNullable(values.get(nonNull(id, "id").toLowerCase(Locale.ROOT)));
        }
    }

        String actualOsName = context.getSystemProperties().get("os.name").toLowerCase(Locale.ENGLISH);
        String actualOsArch = context.getSystemProperties().get("os.arch").toLowerCase(Locale.ENGLISH);
        String actualOsVersion = context.getSystemProperties().get("os.version").toLowerCase(Locale.ENGLISH);

        if (active && os.getFamily() != null) {

    public static final String OS_NAME = System.getProperty("os.name").toLowerCase(Locale.ENGLISH);

    /**
     * The OA architecture.
     */
    public static final String OS_ARCH = System.getProperty("os.arch").toLowerCase(Locale.ENGLISH);

    /**
     * The OS version.
     */
    public static final String OS_VERSION = System.getProperty("os.version").toLowerCase(Locale.ENGLISH);

    /**
     * OS Family
     */

                String layout = className.substring(0, className.length() - "RepositoryLayout".length());
                if (!layout.isEmpty()) {
                    layout = Character.toLowerCase(layout.charAt(0)) + layout.substring(1);
                    return layout;
                }
            }
            return "";
        }
    }

        super(providers);
        this.lookup = lookup;
        this.typeRegistry = typeRegistry;
    }

    @Override
    public Optional<Packaging> lookup(String id) {
        id = id.toLowerCase(Locale.ROOT);
        // TODO: we should be able to inject a Map<String, LifecycleMapping> directly,
        // however, SISU visibility filtering can only happen when an explicit

        if (protocol == null) {
            throw new UnsupportedProtocolException("Unspecified protocol");
        }

        String hint = protocol.toLowerCase(java.util.Locale.ENGLISH);

        Wagon wagon;
        try {
            wagon = container.lookup(Wagon.class, hint);
        } catch (ComponentLookupException e) {

    }

    @SuppressWarnings("checkstyle:innerassignment")
    public final void parseVersion(String version) {
        this.value = version;

        items = new ListItem();

        version = version.toLowerCase(Locale.ENGLISH);

        ListItem list = items;

        Deque<Item> stack = new ArrayDeque<>();
        stack.push(list);

        boolean isDigit = false;

        boolean isCombination = false;