assertThrows(UnsupportedOperationException.class, () -> separated.withSeparator("$", 4));
  }

  public void testBase64() {
    // The following test vectors are specified in RFC 4648 itself
    testEncodingWithSeparators(base64(), "", "");
    testEncodingWithSeparators(base64(), "f", "Zg==");
    testEncodingWithSeparators(base64(), "fo", "Zm8=");

   *
   * <p>Because a {@code SortedSetMultimap} has unique sorted values for a given key, this method
   * returns a {@link SortedSet}, instead of the {@link Collection} specified in the {@link
   * Multimap} interface.
   */
  @Override
  public SortedSet<V> get(@ParametricNullness K key) {
    return (SortedSet<V>) super.get(key);
  }

  /**

packaging.env.file=

# Default configuration directory and file to use in bin/plugin script

# Default values for min/max heap memory allocated to fess java process
packaging.fess.heap.min=256m
packaging.fess.heap.max=1g

# Specifies the maximum file descriptor number
packaging.os.max.open.files=65535

# Maximum number of VMA (Virtual Memory Areas) a process can own
packaging.os.max.map.count=262144

 *
 */
public class GsaConfigException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new GSA configuration exception with the specified detail message and cause.
     *
     * @param message the detail message describing the configuration error
     * @param cause the cause of the exception
     */

    /**
     * Constructs a new ThemeException with the specified message and cause.
     *
     * @param message the exception message
     * @param cause the underlying cause of this exception
     */
    public ThemeException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new ThemeException with the specified message.
     *
     * @param message the exception message

     *
     * @param message the exception message
     * @param cause the underlying cause of this exception
     */
    public ThumbnailGenerationException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new ThumbnailGenerationException with the specified message.
     *

  public static UnsignedLong valueOf(String string) {
    return valueOf(string, 10);
  }

  /**
   * Returns an {@code UnsignedLong} holding the value of the specified {@code String}, parsed as an
   * unsigned {@code long} value in the specified radix.
   *
   * @throws NumberFormatException if the string does not contain a parsable unsigned {@code long}
   *     value, or {@code radix} is not between {@link Character#MIN_RADIX} and {@link

   * {@link Set}, instead of the {@link java.util.Collection} specified in the {@link Multimap}
   * interface.
   */
  @Override
  Set<V> get(@ParametricNullness K key);

  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a
   * {@link Set}, instead of the {@link java.util.Collection} specified in the {@link Multimap}
   * interface.
   */

   * {@link Set}, instead of the {@link java.util.Collection} specified in the {@link Multimap}
   * interface.
   */
  @Override
  Set<V> get(@ParametricNullness K key);

  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a
   * {@link Set}, instead of the {@link java.util.Collection} specified in the {@link Multimap}
   * interface.
   */

   * @return an unmodifiable list containing the specified elements
   */
  public static <E extends @Nullable Object> List<E> asList(@ParametricNullness E first, E[] rest) {
    return new OnePlusArrayList<>(first, rest);
  }

  /**
   * Returns an unmodifiable list containing the specified first and second element, and backed by