int itemHash = equivalence.hash(item);
    int relatedHash = equivalence.hash(related);
    assertWithTemplate(
        "the $HASH ("
            + itemHash
            + ") of $ITEM must be equal to the $HASH ("
            + relatedHash
            + ") of $OTHER",
        itemInfo,
        relatedInfo,
        itemHash == relatedHash);
  }

        def lastModified = new DateTime(new Date())
        def md5hash = '3e25960a79dbc69b674cd4ec67a72c62'
        def contentType = 'application/zip'

        GcsClient gcsClient = Mock(GcsClient) {
            1 * getResource(uri) >> {
                def storageObject = new StorageObject()
                storageObject.setUpdated(lastModified)
                storageObject.setMd5Hash(md5hash)
                storageObject.setSize(BigInteger.TEN)

    }

    @Nullable
    @Override
    public HashCode getClassLoaderHash(ClassLoader classLoader) {
        Visitor visitor = new Visitor();
        visitor.visit(classLoader);
        return visitor.getHash();
    }

    private class Visitor extends ClassLoaderVisitor {
        private final Hasher hasher = Hashing.newHasher();
        private boolean foundUnknown;

        @Override

        return "{hasher cache: " + cache + "}";
    }

    @Override
    public HashCode hash(File file) {
        return snapshot(file).getHash();
    }

    @Override
    public HashCode hash(File file, long length, long lastModified) {
        return snapshot(file, length, lastModified).getHash();
    }

    private FileInfo snapshot(File file) {
        FileMetadata fileMetadata = fileSystem.stat(file);

        succeeds taskName

        def archive = file("build/test.${fileExtension}")
        then:
        def firstFileHash = archive.md5Hash

        when:
        file('dir1/file11.txt').makeOlder()
        archive.delete()
        succeeds taskName

        then:
        archive.md5Hash == firstFileHash

        where:
        taskName << ['tar', 'zip']
        taskType = taskName.capitalize()

        if (!cachedFile.isFile()) {
            // Just copy the jar
            GFileUtils.copyFile(source, cachedFile);
        }
        return cachedFile;
    }

    @Override
    public ClasspathFileHasher getFileHasher() {
        return FileSystemLocationSnapshot::getHash;
    }

            FileSystemLocationSnapshot currentSnapshot = (FileSystemLocationSnapshot) current;
            if (previousSnapshot.getHash().equals(currentSnapshot.getHash())) {
                return true;
            } else if (currentSnapshot.getType() != FileType.Directory || previousSnapshot.getType() != FileType.Directory) {

            logger.warn("Appending input file fingerprints for '{}' to build cache key: {} - {}",
                propertyName, fingerprint.getHash(), fingerprint);
            cacheKeyHasher.putString(propertyName);
            cacheKeyHasher.putHash(fingerprint.getHash());
        });

        beforeExecutionState.getOutputFileLocationSnapshots().keySet().forEach(propertyName -> {

// algorithm.
func (g *gcmAsm) paddedGHASH(hash *[16]byte, data []byte) {
	if siz := len(data) - (len(data) % gcmBlockSize); siz > 0 {
		gcmHash(hash[:], &g.productTable, data[:], siz)
		data = data[siz:]
	}
	if len(data) > 0 {
		var s [16]byte
		copy(s[:], data)
		gcmHash(hash[:], &g.productTable, s[:], len(s))
	}
}

// auth calculates GHASH(ciphertext, additionalData), masks the result with

	})
}

func recordAuthenticationLatency(result, jwtIssuerHash string, duration time.Duration) {
	jwtAuthenticatorLatencyMetric.WithLabelValues(result, jwtIssuerHash).Observe(duration.Seconds())
}

func getHash(data string) string {
	if len(data) > 0 {
		return fmt.Sprintf("sha256:%x", sha256.Sum256([]byte(data)))
	}
	return ""
}