Servers     []*httptest.Server
	Listeners   []net.Listener
	Managers    []*Manager
	Mux         []*mux.Router
	Hosts       []string
	cleanupOnce sync.Once
	cancel      context.CancelFunc
}

// SetupTestGrid creates a new grid for testing purposes.
// Select the number of hosts to create.
// Call (TestGrid).Cleanup() when done.
func SetupTestGrid(n int) (*TestGrid, error) {
	hosts, listeners, err := getHosts(n)
	if err != nil {

        checkstyleTask.configure(t -> t.dependsOn(project.getTasks().withType(Checkstyle.class)));

        // Apply the checkstyle plugin to create `checkstyleMain` and `checkstyleTest`. It only
        // creates them if there is main or test code to check and it makes `check` depend
        // on them. We also want `precommit` to depend on `checkstyle`.
        project.getPluginManager().apply("checkstyle");

        }

        /** Return value from the RPC call. */
        public int retval;
        /** Policy handle to be closed. */
        public rpc.policy_handle handle;

        /**
         * Creates a new LsarClose message.
         *
         * @param handle the policy handle to close
         */
        public LsarClose(final rpc.policy_handle handle) {
            this.handle = handle;
        }

        assertTrue(result);
        // Only fess_config indices should be rebuilt (2 config indices: scheduled_job, access_token)
        // Each creates 2 indices (backup + rebuild) = 4 creates
        assertEquals("Only fess_config indices should be rebuilt", 4, testClient.createdIndices.size());
        // Verify no user/log indices were touched

  }

  /**
   * Creates a {@link PairedStats} from with the given lists of {@code x} and {@code y} values,
   * which must be of the same size.
   */
  static PairedStats createPairedStatsOf(List<Double> xValues, List<Double> yValues) {
    return createFilledPairedStatsAccumulator(xValues, yValues).snapshot();
  }

  /**

    private static final byte OPAD = (byte) 0x5c;

    private final MessageDigest md5;

    private byte[] ipad = new byte[BLOCK_LENGTH];

    private byte[] opad = new byte[BLOCK_LENGTH];

    /**
     * Creates an HMACT64 instance which uses the given secret key material.
     *
     * @param key
     *            The key material to use in hashing.
     */
    public HMACT64(final byte[] key) {
        super("HMACT64");

    private static final byte OPAD = (byte) 0x5c;

    private MessageDigest md5;

    private byte[] ipad = new byte[BLOCK_LENGTH];

    private byte[] opad = new byte[BLOCK_LENGTH];

    /**
     * Creates an HMACT64 instance which uses the given secret key material.
     *
     * @param key The key material to use in hashing.
     */
    public HMACT64(final byte[] key) {
        super("HMACT64");

 * for building a project in a specific environment.</p>
 *
 * <p>Toolchains are defined in the Maven toolchains.xml file and can be
 * referenced in the project's POM file. This allows for greater flexibility
 * and control over the build environment, enabling developers to specify
 * the exact versions of tools they wish to use.</p>
 *
 * <p>

   * Returns an immutable array containing the given values, in order.
   *
   * <p><b>Performance note:</b> this method delegates to {@link #copyOf(Collection)} if {@code
   * values} is a {@link Collection}. Otherwise it creates a {@link #builder} and uses {@link
   * Builder#addAll(Iterable)}, with all the performance implications associated with that.
   */
  public static ImmutableDoubleArray copyOf(Iterable<Double> values) {

   * Returns an immutable array containing the given values, in order.
   *
   * <p><b>Performance note:</b> this method delegates to {@link #copyOf(Collection)} if {@code
   * values} is a {@link Collection}. Otherwise it creates a {@link #builder} and uses {@link
   * Builder#addAll(Iterable)}, with all the performance implications associated with that.
   */
  public static ImmutableIntArray copyOf(Iterable<Integer> values) {