formatter.node("backing tree");
        formatter.startChildren();
        tree.describeContents(formatter);
        formatter.endChildren();
    }

    public FileTreeInternal getTree() {
        return tree;
    }

    /**
     * The current set of patterns. Both the instance and the patterns it contains can change over time.
     */
    public PatternSet getPatterns() {

                        public void onOsMemoryStatus(OsMemoryStatus osMemoryStatus) {
                            freeMemory = osMemoryStatus.getPhysicalMemory().getFree()
                            latch.countDown()
                        }
                    })
                    latch.await()

                    // Force worker daemon expiration to occur

     * Describes if a certain class of users has read access to a file or directory.
     * <p>
     * Read access is the capability to view the contents of a file, or to list the contents of a directory.
     */
    boolean getRead();

    /**
     * Describes if a certain class of users has write access to a file or directory.
     * <p>
     * Write access is the capability to modify or remove the contents of a file,

        this.patterns = patterns;
        this.tree = tree;
    }

    @Override
    public String getDisplayName() {
        return tree.getDisplayName();
    }

    public FileSystemMirroringFileTree getTree() {
        return tree;
    }

    public PatternSet getPatterns() {
        return patterns;
    }

    @Override
    public DirectoryFileTree getMirror() {

    }

    private static long calculateAverageUsage(Collection<GarbageCollectionEvent> events) {
        long sum = 0;
        for (GarbageCollectionEvent event : events) {
            sum += event.getUsage().getUsed();
        }
        return sum / events.size();
    }

    private static long findMaxSize(Collection<GarbageCollectionEvent> events) {

    }

    @Override
    public Set<File> getFiles() {
        listener.fileCollectionObserved(this);
        return super.getFiles();
    }

    public MinimalFileTree getTree() {
        return tree;
    }

    @Override
    public String getDisplayName() {
        return tree.getDisplayName();
    }

    @Override
    protected void appendContents(TreeFormatter formatter) {

        return DaemonExpirationResult.NOT_TRIGGERED;

    }

    @Nullable
    private DaemonExpirationResult checkExpiry(OsMemoryStatusAspect.Available memory, long memoryThresholdInBytes) {
        long freeMem = memory.getFree();
        if (freeMem < memoryThresholdInBytes) {
            LOGGER.info("after free system {} memory ({}) fell below threshold of {}", memory.getName(), NumberUtil.formatBytes(freeMem), NumberUtil.formatBytes(memoryThresholdInBytes));

            return changedTo(versions.get(versions.lastKey()) + 1, minGradleVersion);
        }

        /**
         * Specify the Gradle version where this cache directory was retired.
         * For this and any newer Gradle version, the cache directory is unused.
         * This is indicated by setting the current cache version to Integer.MAX_VALUE (so it cannot be further incremented).
         */

/**
 * You should use the methods of {@link org.gradle.api.internal.InstantiatorFactory} instead of this type, as it will give better error reporting, more consistent behaviour and better performance.
 * This type will be retired in favor of {@link org.gradle.api.internal.InstantiatorFactory} at some point. Currently it is too tangled with a few things to just remove.
 */
public class DirectInstantiator implements Instantiator {

    /**

        rootDir.tarTo(file);
    }

    @Override
    protected TestFile getArchiveFile() {
        return archiveFile;
    }

    @Override
    protected TarFileTree getTree() {
        return tree;
    }

    @Test
    public void readsGzippedTarFile() {
        TestFile tgz = tempDirProvider.getTestDirectory().file("test.tgz");