// Mark channel as failed
        failedChannel.setState(ChannelState.FAILED);
        
        // Get or create failover state
        FailoverState state = failoverStates.computeIfAbsent(
            failedChannel.getChannelId(), 
            FailoverState::new
        );
        
        // Redistribute pending operations
        redistributePendingOperations(failedChannel);
        

    public void flush() {
        descriptors.clear();
    }

    @Override
    public Key createKey(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session) {
        return keys.computeIfAbsent(new CacheKey(plugin, repositories, session), k -> k);
    }

    @Override
    public PluginDescriptor get(Key cacheKey) {
        return clone(descriptors.get(cacheKey));
    }

    @Override

    }

    @Override
    public CacheRecord get(Key key, PluginRealmSupplier supplier)
            throws PluginResolutionException, PluginContainerException {
        try {
            return cache.computeIfAbsent(key, k -> {
                try {
                    return supplier.load();
                } catch (PluginResolutionException | PluginContainerException e) {
                    throw new RuntimeException(e);

     * @param supplier the supplier will compute the new value
     * @return the session data associated with the key
     */
    @Nullable
    <T> T computeIfAbsent(@Nonnull Key<T> key, @Nonnull Supplier<T> supplier);

    /**
     * Create a key using the given class as an identifier and as the type of the object.
     */
    static <T> Key<T> key(Class<T> clazz) {

            throw uoe();
        }

        @Override
        public V replace(K key, V value) {
            throw uoe();
        }

        @Override
        public V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction) {
            throw uoe();
        }

        @Override

            }
        }
        return Language.UNKNOWN;
    }

    private static void addError(Map<File, List<Error>> errors, File file, Error error) {
        errors.computeIfAbsent(file, f -> new ArrayList<>()).add(error);
    }

    private enum Language { KOTLIN, GROOVY, UNKNOWN }

    private static final class Snippet {

    }

    @Override
    public Project getProject(MavenProject project) {
        return project != null && project.getBasedir() != null
                ? allProjects.computeIfAbsent(project.getId(), id -> new DefaultProject(this, project))
                : null;
    }

    @Override
    public List<ArtifactRepository> toArtifactRepositories(List<RemoteRepository> repositories) {

            }

            if (cls.isArray()) {
                evaluateArray(target);
            } else if (isQualifiedForInterpolation(cls)) {
                Field[] fields = FIELDS_BY_CLASS.computeIfAbsent(cls, k -> cls.getDeclaredFields());

                for (Field field : fields) {
                    Class<?> type = field.getType();
                    if (isQualifiedForInterpolation(field, type)) {

            }

            String projectKey = ArtifactUtils.versionlessKey(project.getGroupId(), project.getArtifactId());

            Map<String, Vertex> vertices = vertexMap.computeIfAbsent(projectKey, k -> new HashMap<>(2, 1));

            vertices.put(project.getVersion(), graph.addVertex(projectId));
        }

        for (Vertex projectVertex : graph.getVertices()) {

        // Mark channel as failed
        failedChannel.setState(ChannelState.FAILED);

        // Get or create failover state
        FailoverState state = failoverStates.computeIfAbsent(failedChannel.getChannelId(), FailoverState::new);

        // Redistribute pending operations
        redistributePendingOperations(failedChannel);