}
    }

    @Override
    public boolean addPending(final ProviderInternal<? extends T> provider) {
        if (provider instanceof ChangingValue) {
            Cast.<ChangingValue<T>>uncheckedNonnullCast(provider).onValueChange(previousValue -> {
                values.remove(previousValue);
                pending.add(collectorFromProvider(provider));
            });
        }

        this.buildOperationRunner = buildOperationRunner;
        this.specFactory = specFactory;
        IsolationScheme<WorkAction<?>, WorkParameters> isolationScheme = new IsolationScheme<>(Cast.uncheckedNonnullCast(WorkAction.class), WorkParameters.class, WorkParameters.None.class);
        workerServer = new DefaultWorkerServer(internalServices, instantiatorFactory, isolationScheme, Collections.singleton(WorkerExecutor.class));
    }

    }

    /**
     * Typed and() method for a single {@link Spec}.
     *
     * @since 4.3
     */
    public AndSpec<T> and(Spec<? super T> spec) {
        return and(Cast.<Spec<? super T>[]>uncheckedNonnullCast(new Spec<?>[]{spec}));
    }

    @SuppressWarnings("rawtypes")
    public AndSpec<T> and(Closure spec) {
        return and(new ClosureSpec<>(spec));
    }

    public static <T> AndSpec<T> empty() {

            }
        }

        return !hasNonReadMode;
    }

    public static boolean optionsAllowReading(Set<?> options) {
        return optionsAllowReading(Cast.<Set<OpenOption>>uncheckedNonnullCast(options).toArray(new OpenOption[0]));
    }

    public static void tryReportFileOpened(Path path, String consumer) {
        File file = toFileIfAvailable(path);
        if (file != null) {

        @SafeVarargs
        @Nullable
        static <T> SideEffect<T> composite(SideEffect<? super T>... sideEffects) {
            @SuppressWarnings("varargs")
            List<SideEffect<T>> sideEffectList = Cast.uncheckedNonnullCast(Arrays.asList(sideEffects));
            return CompositeSideEffect.of(sideEffectList);
        }

        /**

        return Cast.uncheckedNonnullCast(getInstantiator().newInstance(DefaultTaskCollection.class, this, filter, getInstantiator(), project, parentMutationGuard));
    }

    @Override
    protected <S extends T> DefaultTaskCollection<S> filtered(Spec<String> nameFilter, CollectionFilter<S> elementFilter) {

            setSupplier(new FixedSupplier<>(value.getFixedValue(), Cast.uncheckedCast(value.getSideEffect())));
        } else {
            CollectingProvider<T, C> asCollectingProvider = Cast.uncheckedNonnullCast(value.getChangingValue());
            setSupplier(new CollectingSupplier(new ElementsFromCollectionProvider<>(asCollectingProvider)));
        }
    }

    @Override

            this.provider = ignoreAbsent ? neverMissing(Cast.uncheckedNonnullCast(provider)) : provider;
            this.ignoreAbsent = ignoreAbsent;
        }

        @Nonnull
        private static <T> ProviderInternal<? extends Iterable<? extends T>> neverMissing(ProviderInternal<Iterable<? extends T>> provider) {
            return Cast.uncheckedNonnullCast(provider.orElse(ImmutableList.of()));
        }

        @Override

    public Iterable<InputFileDetails> getAllFileChanges() {
        Iterable<FileChange> changes = () -> currentInputs.values().stream().flatMap(NonIncrementalInputChanges::getAllFileChanges).iterator();
        return Cast.uncheckedNonnullCast(changes);
    }

    private static Stream<FileChange> getAllFileChanges(CurrentFileCollectionFingerprint currentFileCollectionFingerprint) {

            } catch (Throwable t) {
                //failed to instantiate BlockJUnitRunner. try deprecated JUnitRunner (for JUnit < 4.5)
                try {
                    Class<Runner> runnerClass = Cast.uncheckedNonnullCast(Thread.currentThread().getContextClassLoader().loadClass("org.junit.internal.runners.JUnit4ClassRunner"));
                    final Constructor<Runner> constructor = runnerClass.getConstructor(Class.class);