setSupplier(noValueSupplier());
        } else if (value.hasFixedValue()) {
            setSupplier(new FixedSupplier<>(uncheckedNonnullCast(value.getFixedValue()), uncheckedCast(value.getSideEffect())));
        } else {
            CollectingProvider<K, V> asCollectingProvider = uncheckedNonnullCast(value.getChangingValue());
            setSupplier(new CollectingSupplier(new EntriesFromMapProvider<>(asCollectingProvider)));
        }

        Class<? extends BuildCacheServiceFactory<C>> castFactoryType = Cast.uncheckedNonnullCast(
            buildCacheConfiguration.getBuildCacheServiceFactoryType(configuration.getClass())
        );

        BuildCacheServiceFactory<C> factory = instantiator.newInstance(castFactoryType);
        Describer describer = new Describer();
        S service = Cast.uncheckedNonnullCast(factory.createBuildCacheService(configuration, describer));

        private Failure(String reason) {
            this.reason = reason;
        }
    }

    private static final Class<? extends Annotation>[] CALLABLE_KIND_ANNOTATION_CLASSES = Cast.uncheckedNonnullCast(new Class<?>[]{
        CallableKind.InstanceMethod.class,
        CallableKind.StaticMethod.class,
        CallableKind.AfterConstructor.class,
        CallableKind.GroovyPropertyGetter.class,

    }

    public CompositeFileTree() {
        super();
    }

    @Override
    protected List<? extends FileTreeInternal> getSourceCollections() {
        return Cast.uncheckedNonnullCast(super.getSourceCollections());
    }

    @Override
    public FileTree plus(FileTree fileTree) {
        return new UnionFileTree(taskDependencyFactory, this, Cast.cast(FileTreeInternal.class, fileTree));
    }

    @Nullable
    public static <T> T uncheckedCast(@Nullable Object object) {
        return (T) object;
    }

    @SuppressWarnings({"unchecked", "TypeParameterUnusedInFormals"})
    public static <T> T uncheckedNonnullCast(Object object) {
        return (T) object;
    }

        taskMutator.mutate("Task.usesService(Provider)", () -> {
            // TODO:configuration-cache assert build service is from the same build as the task
            addRegisteredService(Cast.uncheckedNonnullCast(service));
        });
    }

    private void addRegisteredService(RegisteredBuildServiceProvider<?, ?> service) {
        if (registeredServices == null) {

        R result = execute(work, context);
        return new DefaultIdentityCacheResult<>(
            result
                .getOutputAs(Object.class)
                .map(Cast::<T>uncheckedNonnullCast),
            result
                .getReusedOutputOriginMetadata()
                .orElseGet(() -> result.getAfterExecutionOutputState()
                    .map(ExecutionOutputState::getOriginMetadata)

    }

    public BroadcastDispatch<T> add(String methodName, Action<?> action) {
        assertIsMethod(methodName);
        return add(action, new ActionInvocationHandler(methodName, Cast.<Action<Object>>uncheckedNonnullCast(action)));
    }

    abstract BroadcastDispatch<T> add(Object handler, Dispatch<MethodInvocation> dispatch);

    private void assertIsMethod(String methodName) {
        for (Method method : type.getMethods()) {

    ) throws IOException {
        if (optionsAllowReading(options)) {
            tryReportFileOpened(path, consumer);
        }
        return Files.newByteChannel(path, Cast.uncheckedNonnullCast(options), attrs);
    }

    @InterceptCalls
    @StaticMethod(ofClass = Files.class)
    public static BufferedReader intercept_newBufferedReader(
        Path path,

        }

        @Override
        public <N extends S> CollectionEventRegister<N> filtered(CollectionFilter<N> filter) {
            return new FilteredEventRegister<N>(filter, Cast.uncheckedNonnullCast(this));
        }
    }