default:
                return new CompositeFileSystemSnapshot(snapshots);
        }
    }

    @Override
    public Stream<FileSystemLocationSnapshot> roots() {
        return snapshots.stream()
            .flatMap(FileSystemSnapshot::roots);
    }

    @Override
    public SnapshotVisitResult accept(FileSystemSnapshotHierarchyVisitor visitor) {
        for (FileSystemSnapshot snapshot : snapshots) {

    private static final StringInterner STRING_INTERNER = new StringInterner()

    public static final String IGNORED = "IGNORED"
    def fileSystemAccess = TestFiles.fileSystemAccess()

    FileSystemSnapshot roots
    TestFile jarFile1
    TestFile jarFile2
    TestFile resources
    String subDirA = "a"
    String subDirB = "b"
    String fileInRoot = "input.txt"
    String fileInSubdirA = "a/input-1.txt"

import org.gradle.kotlin.dsl.support.isGradleKotlinDslJar
import org.gradle.kotlin.dsl.support.listFilesOrdered

import java.io.File


const val buildSrcSourceRootsFilePath = "build/source-roots/buildSrc/source-roots.txt"


object SourcePathProvider {

    fun sourcePathFor(
        classPath: ClassPath,
        scriptFile: File?,
        projectDir: File,
        gradleHomeDir: File?,

    }

    @Override
    public Map<String, FileSystemLocationFingerprint> collectFingerprints(FileSystemSnapshot roots) {
        ImmutableMap.Builder<String, FileSystemLocationFingerprint> builder = ImmutableMap.builder();
        roots.accept(new MissingRootAndDuplicateIgnoringFileSystemSnapshotVisitor() {
            @Override

        if (cacheableWork.shouldInvalidateOutputsBeforeLoad()) {
            ImmutableList.Builder<String> roots = ImmutableList.builder();
            cacheableWork.visitOutputTrees((name, type, root) -> roots.add(root.getAbsolutePath()));
            fileSystemAccess.invalidate(roots.build());
        }
        return buildCache.load(cacheKey, cacheableWork);
    }

    }

    @Override
    public Map<String, FileSystemLocationFingerprint> collectFingerprints(FileSystemSnapshot roots) {
        ImmutableMap.Builder<String, FileSystemLocationFingerprint> builder = ImmutableMap.builder();
        HashSet<String> processedEntries = new HashSet<>();
        roots.accept(new RelativePathTracker(), (snapshot, relativePath) -> {
            String absolutePath = snapshot.getAbsolutePath();

                roots == []
            }
            with(inputFileProperties.inputArtifact) {
                hash != null
                attributes == ['DIRECTORY_SENSITIVITY_DEFAULT', 'FINGERPRINTING_STRATEGY_ABSOLUTE_PATH', 'LINE_ENDING_SENSITIVITY_DEFAULT']
                with(Iterables.getOnlyElement(roots)) {
                    hash != null

// - checking fields are set as expected.
func VerifyCertificate(privPem []byte, certChainPem []byte, rootCertPem []byte, expectedFields *VerifyFields) error {
	roots := x509.NewCertPool()
	if rootCertPem != nil {
		if ok := roots.AppendCertsFromPEM(rootCertPem); !ok {
			return fmt.Errorf("failed to parse root certificate")
		}
	}

	intermediates := x509.NewCertPool()

        protected static class Property {

            private final String hash;
            private final Set<String> attributes;
            private final List<Entry> roots = new ArrayList<>();

            public Property(String hash, Set<String> attributes) {
                this.hash = hash;
                this.attributes = attributes;
            }

        when:
        def directories = supplier.get()

        then:
        directories.isEmpty()
    }

    def "has default roots"() {
        given:
        def supplier = new LinuxInstallationSupplier()

        expect:
        supplier.roots.length > 1
    }

    def "supplies no installations for non-existing directory"() {
        given: