return this;
        }
        return snapshot;
    }

    @Override
    public void appendToHasher(Hasher hasher) {
        if (implementationHash == null) {
            hasher.putNull();
        } else {
            hasher.putHash(implementationHash);
        }
        hasher.putBytes(serializedValue);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {

        Properties originalProperties = System.getProperties();
        Properties updatedProperties = new Properties();
        updatedProperties.putAll(originalProperties);
        updatedProperties.putAll(actionParameters.getSystemProperties());
        System.setProperties(updatedProperties);
        try {
            return delegate.execute(action, actionParameters, buildRequestContext);

    multimap.put("foo", 3);
    multimap.put("bar", 1);
    multimap.putAll("foo", Arrays.asList(-1, 2, 4));
    multimap.putAll("bar", Arrays.asList(2, 3));
    multimap.put("foo", 1);
    TreeMultimap<String, Integer> copy =
        TreeMultimap.create(StringLength.COMPARATOR, DECREASING_INT_COMPARATOR);
    copy.putAll(multimap);
    assertEquals(multimap, copy);

                return true;
            }
        }
        return false;
    }

    @Override
    public void appendToHasher(Hasher hasher) {
        if (implementationHash == null) {
            hasher.putNull();
        } else {
            hasher.putHash(implementationHash);
        }
        hasher.putBytes(serializedValue);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {

        for (String group : model.getGroups()) {
            groups.putAll(group, model.getTasksForGroup(group));
        }
        String otherGroupName = findOtherGroup(groups.keySet());
        if (otherGroupName != null && groups.keySet().contains(DEFAULT_GROUP)) {
            groups.putAll(otherGroupName, groups.removeAll(DEFAULT_GROUP));
        }

        }
        return defaultValue;
    }

    public DataStoreParams newInstance() {
        return new DataStoreParams(params);
    }

    public void putAll(final Map<String, String> map) {
        params.putAll(map);
    }

    public boolean containsKey(final String key) {
        return params.containsKey(key);
    }

    public Map<String, Object> asMap() {

        then:
        hashes.size() == threadRange.size()
    }

    def 'null does not collide with other values'() {
        expect:
        def hasher = Hashing.newHasher()
        hasher.putNull()
        def hash = hasher.hash()
        hash != Hashing.hashString("abc")
    }

    def 'hash collision for bytes'() {
        def left = [[1, 2, 3], [4, 5]]
        def right = [[1, 2], [3, 4, 5]]

        // The location with highest priority needs to come last here, as it overwrites any previous entries.
        systemProperties.putAll(SystemPropertiesHandler.getSystemProperties(new File(rootDir, "gradle.properties")));
        systemProperties.putAll(SystemPropertiesHandler.getSystemProperties(new File(gradleUserHome, "gradle.properties")));
    }

    private static File rootDir(File wrapperJar) {

   *
   * <pre>{@code
   * static final Multimap<String, Integer> STRING_TO_INTEGER_MULTIMAP =
   *     new ImmutableMultimap.Builder<String, Integer>()
   *         .put("one", 1)
   *         .putAll("several", 1, 2, 3)
   *         .putAll("many", 1, 2, 3, 4, 5)
   *         .build();
   * }</pre>
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build

    /**
     * Puts a hashable value into the hasher.
     */
    void put(Hashable hashable);

    /**
     * Feed a {@code null} value into the hasher.
     */
    void putNull();

    /**
     * Returns the combined hash.
     *
     * If the build cache hash is invalid, an exception is thrown.
     *
     * @throws IllegalStateException if the hasher state is invalid.
     */