public Map getPluginContext(PluginDescriptor plugin, MavenProject project) {
        Map<String, Map> pluginContextsByKey =
                pluginContextsByProjectAndPluginKey.computeIfAbsent(project.getId(), k -> new HashMap<>());

        return pluginContextsByKey.computeIfAbsent(plugin.getPluginLookupKey(), k -> new HashMap<>());
    }

    public void setFailureBehavior(String failureBehavior) {
        if (failureBehavior == null) {

        }

        return cache.computeIfAbsent(key, k -> new CacheRecord(artifacts));
    }

    @Override
    public CacheRecord put(Key key, LifecycleExecutionException exception) {
        Objects.requireNonNull(exception, "exception cannot be null");
        assertUniqueKey(key);
        return cache.computeIfAbsent(key, k -> new CacheRecord(exception));
    }

        }
        return plural;
    }

    private void recordString(String path, String value) {
        pathStats
                .computeIfAbsent(path, k -> new HashMap<>())
                .computeIfAbsent(value, k -> new StringStats())
                .recordOccurrence(value);
    }

    List<PathAnalysis> getPathAnalysisSorted() {

            return false;
        }

        // Check per-account limit
        if (username != null) {
            AccountAttempts account = accountAttempts.computeIfAbsent(username, k -> new AccountAttempts());
            if (account.isLockedOut()) {
                if (account.getLockoutExpiry().isAfter(Instant.now())) {
                    totalAttemptsBlocked.incrementAndGet();

        if (setterInfo == null) {
            // Look for any method named "set" with one parameter
            Map<String, MethodInfo> classMethodCache = METHOD_CACHE.computeIfAbsent(beanType, this::buildMethodCache);
            setterInfo = classMethodCache.get("set");
        }

        if (setterInfo == null) {

            if (allProjects != null) {
                Map<String, Map<String, Map<String, MavenProject>>> map = new HashMap<>();
                allProjects.forEach(project -> map.computeIfAbsent(project.getGroupId(), k -> new HashMap<>())
                        .computeIfAbsent(project.getArtifactId(), k -> new HashMap<>())
                        .put(project.getVersion(), project));
                this.allProjects = map;
            } else {

        // use original key
        return parent.replace(key, value);
    }

    @Override
    public V computeIfAbsent(final K key, final Function<? super K, ? extends V> mappingFunction) {
        // use original key
        return parent.computeIfAbsent(key, mappingFunction);
    }

    @Override

     *
     * @see Function
     * @see Optional
     * @see HashMap#computeIfAbsent(Object, Function)
     */
    static UnaryOperator<String> memoize(UnaryOperator<String> callback) {
        Map<String, Optional<String>> cache = new HashMap<>();
        return s -> cache.computeIfAbsent(s, v -> Optional.ofNullable(callback.apply(v)))
                .orElse(null);
    }

            SessionData data = session.getSession().getData();
            Map<MavenProject, OwnerReentrantLock> locks = data.computeIfAbsent(PROJECT_LOCKS, ConcurrentHashMap::new);
            return locks.computeIfAbsent(session.getCurrentProject(), p -> new OwnerReentrantLock());
        }
    }

    static class OwnerReentrantLock extends ReentrantLock {
        @Override

@Deprecated(since = "4.0.0")
class Graph {

    final Map<String, Set<String>> graph = new LinkedHashMap<>();

    synchronized void addEdge(String from, String to) throws CycleDetectedException {
        if (graph.computeIfAbsent(from, l -> new HashSet<>()).add(to)) {
            List<String> cycle = visitCycle(graph, Collections.singleton(to), new HashMap<>(), new LinkedList<>());
            if (cycle != null) {