SessionData data = request.getRepositorySession().getData();
        return (ConcurrentMap<Key, PluginVersionResult>)
                data.computeIfAbsent(CACHE_KEY, () -> new ConcurrentHashMap<>(256));
    }

    private static Key getKey(PluginVersionRequest request) {
        return new Key(request.getGroupId(), request.getArtifactId(), request.getRepositories());

        } else {
            return cache.computeIfAbsent(groupId, artifactId, version, tag, s);
        }
    }

    private static <T> T cache(ModelCache cache, Source source, String tag, Callable<T> supplier) {
        Supplier<T> s = asSupplier(supplier);
        if (cache == null) {
            return s.get();
        } else {
            return cache.computeIfAbsent(source, tag, s);
        }
    }

        }
    }

    public ComponentState getVersion(ModuleVersionIdentifier id, ComponentIdentifier componentIdentifier) {
        assert id.getModule().equals(this.id);
        return versions.computeIfAbsent(id, k ->
            new ComponentState(idGenerator.nextGraphNodeId(), this, id, componentIdentifier, metaDataResolver)
        );
    }

    void addSelector(SelectorState selector, boolean deferSelection) {

     *
     * @param type the type of path (class-path, module-path, …)
     * @param path the path element to add
     */
    private void addPathElement(PathType type, Path path) {
        dispatchedPaths.computeIfAbsent(type, (t) -> new ArrayList<>()).add(path);
    }

    /**
     * Adds main and test output directories to the result. This method adds the main output directory

                if (mgmt != null) {
                    for (Plugin plugin : mgmt.getPlugins()) {
                        String key = plugin.getKey();
                        managedVersions.computeIfAbsent(key, k -> plugin.getVersion());
                    }
                }
            }
        }

        for (String key : versions.keySet()) {

    }

    private static final Map<CI, String> CI_INJECTION_SCRIPT_CONTENTS = new ConcurrentHashMap<>()

    private static String getCiInjectionScriptContent(CI ci) {
        return CI_INJECTION_SCRIPT_CONTENTS.computeIfAbsent(ci) { new URL(it.getUrl()).getText(StandardCharsets.UTF_8.name()) }
    }

    private static final List<String> UNSUPPORTED = [
        "2.4.2",
        "2.4.1",
        "2.4",
        "2.3",
        "2.2.1",

        return dependencyStateCache.computeIfAbsent(md, this::createDependencyState);
    }

    private void createAndLinkEdgeState(DependencyState dependencyState, Collection<EdgeState> discoveredEdges, ExcludeSpec resolutionFilter, boolean deferSelection) {
        EdgeState dependencyEdge = edgesCache.computeIfAbsent(dependencyState, ds -> new EdgeState(this, ds, resolutionFilter, resolveState));

                    queue.addLast(mappingForSupertype)
                }

                for ((typeParameterDescriptor, boundTypeArgument) in mapping) {
                    val boundsForParameter = typeArgumentMapping.computeIfAbsent(typeParameterDescriptor) {
                        var isCompatible = true
                        val languageVersionSettings = analysisContext.resolveSession.languageVersionSettings

     * Includes type bindings from a whole class hierarchy
     */
    public static Map<TypeVariable<?>, Type> getAllTypeBindings(Type type) {
        return TYPE_BINDINGS_CACHE.computeIfAbsent(type, t -> {
            Map<TypeVariable<?>, Type> mapping = new HashMap<>();
            getAllTypeBindingsImpl(t, mapping);
            return mapping;
        });
    }

        final Set<MavenProject> projectsIncludingParents = new HashSet<>();
        for (MavenProject project : session.getProjects()) {
            superPomModels.computeIfAbsent(
                    project.getModelVersion(),
                    v -> superPomProvider.getSuperModel(v).getDelegate());
            boolean isAdded = projectsIncludingParents.add(project);