}
    }

    public static void putInts(Hasher hasher, int[] array) {
        hasher.putInt(array.length);
        for (int i : array) {
            hasher.putInt(i);
        }
    }

    public static void putShorts(Hasher hasher, short[] array) {
        hasher.putInt(array.length);
        for (short s : array) {
            hasher.putInt(s);
        }
    }

        public void putHash(HashCode hashCode) {
            hasher.putInt(hashCode.length());
            hasher.putHash(hashCode);
        }

        @Override
        public void putInt(int value) {
            hasher.putInt(4);
            hasher.putInt(value);
        }

        @Override
        public void putLong(long value) {
            hasher.putInt(8);
            hasher.putLong(value);
        }

        hasher.putInt(1)
        hasher.hash()

        when:
        hasher.hash()

        then:
        thrown(IllegalStateException)
    }

    def 'hashers can overlap'() {
        when:
        def hasher1 = Hashing.newHasher()
        hasher1.putInt(1)

        and:
        def hasher2 = Hashing.newHasher()
        hasher2.putInt(1)

            cacheHasher.putString(implementation.getName());
            cacheHasher.putInt(metadataResources.size());
            for (ResourcePattern ivyPattern : metadataResources) {
                cacheHasher.putString(ivyPattern.getPattern());
            }
            cacheHasher.putInt(artifactResources.size());
            for (ResourcePattern artifactPattern : artifactResources) {

    }

    public ImmutableList<MapEntrySnapshot<T>> getEntries() {
        return entries;
    }

    @Override
    public void appendToHasher(Hasher hasher) {
        hasher.putString("Map");
        hasher.putInt(entries.size());
        for (MapEntrySnapshot<T> entry : entries) {
            entry.getKey().appendToHasher(hasher);
            entry.getValue().appendToHasher(hasher);
        }
    }

    @Override

    public IntegerValueSnapshot(Integer value) {
        super(value);
    }

    @Override
    public void appendToHasher(Hasher hasher) {
        hasher.putInt(getValue());
    }

        Hasher hasher = Hashing.defaultFunction().newHasher();
        hasher.putInt(CACHE_FORMAT);
        hasher.putInt(AsmConstants.MAX_SUPPORTED_JAVA_VERSION);
        gradleCoreInstrumentationTypeRegistry.getInstrumentedTypesHash().ifPresent(hasher::putHash);

        super(identifier, hasher -> {
            contentNormalizer.appendConfigurationToHasher(hasher);
            hasher.putInt(directorySensitivity.ordinal());
        });
        this.directorySensitivity = directorySensitivity;
    }

    protected DirectorySensitivity getDirectorySensitivity() {
        return directorySensitivity;
    }

    public ShortValueSnapshot(Short value) {
        super(value);
    }

    @Override
    public void appendToHasher(Hasher hasher) {
        hasher.putInt(getValue());
    }

    /**
     * Feed a single byte into the hasher.
     */
    void putByte(byte value);

    /**
     * Feed an integer byte into the hasher.
     */
    void putInt(int value);

    /**
     * Feed a long value byte into the hasher.
     */
    void putLong(long value);

    /**
     * Feed a double value into the hasher.
     */
    void putDouble(double value);