return flags;
    }

    /**
     * Check if a specific flag is set.
     * @param flag the flag to check
     * @return whether flag is set
     */
    public boolean isFlagSet(final int flag) {
        return (this.flags & flag) == flag;
    }

    /**
     * Remove flag
     *
     * @param flag the flag to remove
     */
    public void unsetFlag(final int flag) {
        this.flags &= ~flag;

      }
    };

    abstract MeanAndVariance variance(double[] values, MeanAlgorithm meanAlgorithm);
  }

  @Param({"100", "10000"})
  int n;

  @Param MeanAlgorithm meanAlgorithm;
  @Param VarianceAlgorithm varianceAlgorithm;

  private final double[][] values = new double[0x100][];

  @BeforeExperiment
  void setUp() {
    Random rng = new Random();

  /**
   * Parses a trie node and returns the number of characters consumed.
   *
   * @param stack The prefixes that precede the characters represented by this node. Each entry of
   *     the stack is in reverse order.
   * @param encoded The serialized trie.
   * @param start An index in the encoded serialized trie to begin reading characters from.
   * @param builder A map builder to which all entries will be added.

        }
    }

    /**
     * Creates an access result after processing the response data through ingesters.
     *
     * @param responseData the response data from the crawled resource
     * @param resultData the result data to be processed
     * @return the access result containing the processed data
     */
    @Override

    /**
     * Creates a new {@link BeanFieldSetAccessibleFailureException} with the specified cause.
     *
     * @param componentClass
     *            the component class
     * @param targetField
     *            the target field
     * @param cause
     *            the cause
     */

    /**
     * Creates a new {@link BeanMethodSetAccessibleFailureException} with the specified cause.
     *
     * @param componentClass
     *            the component class
     * @param targetMethod
     *            the target method
     * @param cause
     *            the cause
     */

        if (logger.isDebugEnabled()) {
            logger.debug("Ignored SID: {} {}", type, sid);
        }
        return null;
    }

    /**
     * Creates a search role.
     * @param type The SID type.
     * @param name The account name.
     * @return The search role.
     */
    protected String createSearchRole(final int type, final String name) {
        if (fessConfig.isLdapLowercasePermissionName()) {

        }
        return extractorFactory;
    }

    /**
     * Creates a temporary file.
     * @param prefix The prefix string to be used in generating the file's name.
     * @param suffix The suffix string to be used in generating the file's name.
     * @param directory The directory in which the file is to be created, or null if the default temporary-file directory is to be used.

     * Do not instantiate.
     */
    protected SerializeUtil() {
    }

    private static final int BYTE_ARRAY_SIZE = 8 * 1024;

    /**
     * Tests if the object can be serialized.
     *
     * @param obj the object to be serialized (must not be {@literal null})
     * @return the deserialized object
     */
    public static Object serialize(final Object obj) {
        assertArgumentNotNull("obj", obj);

    /**
     * Do not instantiate.
     */
    protected ZipInputStreamUtil() {
    }

    /**
     * A method that wraps the exception handling of {@link ZipInputStream#getNextEntry()}.
     *
     * @param zis
     *            {@link ZipInputStream}. Must not be {@literal null}.
     * @return {@link ZipEntry}
     * @see ZipInputStream#getNextEntry()
     */
    public static ZipEntry getNextEntry(final ZipInputStream zis) {