throw new UnsupportedOperationException();
        }

        /**
         * Gets the initialization parameter value for the given parameter name.
         *
         * This method maps SPNEGO configuration parameter names to their corresponding
         * values from system properties or default values. It handles various
         * authentication and security settings for SPNEGO.
         *

        final CrawlingConfig crawlingConfig = crawlingConfigHelper.get(crawlerContext.getSessionId());
        final Map<String, String> clientConfigMap = crawlingConfig.getConfigParameterMap(ConfigName.CLIENT);
        final String value = clientConfigMap.get(CRAWLER_CLIENTS);
        final CrawlerClient client = getClientRuleList(value).stream().map(e -> {
            if (e.getSecond().matcher(url).matches()) {
                return e.getFirst();

    map.put("bar", 1);
    map.put("foo", 2);
    map.put("bar", 3);
    map.put("bar", 4);
    assertEquals("[1, 2, 3, 4]", map.values().toString());
    map.values().remove(2);
    assertEquals("{bar=[1, 3, 4]}", map.toString());
  }

  public void testLinkedEntries() {
    Multimap<String, Integer> map = create();
    map.put("bar", 1);
    map.put("foo", 2);
    map.put("bar", 3);

  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableSortedMap<K, V> copyOf(Map<? extends K, ? extends V> map) {
    return copyOfInternal((Map<K, V>) map, (Ordering<K>) Ordering.natural());
  }

  public static <K, V> ImmutableSortedMap<K, V> copyOf(
      Map<? extends K, ? extends V> map, Comparator<? super K> comparator) {
    return copyOfInternal(map, checkNotNull(comparator));
  }

     * configured separator and key-value separator, to {@code builder}. Identical to {@link
     * #appendTo(Appendable, Map)}, except that it does not throw {@link IOException}.
     */
    @CanIgnoreReturnValue
    public StringBuilder appendTo(StringBuilder builder, Map<?, ?> map) {
      return appendTo(builder, map.entrySet());
    }

    /**

        }
    }

    private Map<String, Object> getContextMap() {
        HashMap<String, Object> map = mapPool.poll();
        if (map == null) {
            map = new HashMap<>();
        } else {
            map.clear();
        }
        return map;
    }

    private void returnContextMap(Map<String, Object> map) {
        if (map instanceof HashMap && map.size() < 20) { // Avoid keeping very large maps

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.Maps.immutableEntry;
import static com.google.common.collect.testing.Helpers.mapEntry;
import static com.google.common.truth.Truth.assertThat;
import static java.util.Arrays.asList;

     * configured separator and key-value separator, to {@code builder}. Identical to {@link
     * #appendTo(Appendable, Map)}, except that it does not throw {@link IOException}.
     */
    @CanIgnoreReturnValue
    public StringBuilder appendTo(StringBuilder builder, Map<?, ?> map) {
      return appendTo(builder, map.entrySet());
    }

    /**

 */
public class SecureKeyManager implements AutoCloseable {

    private static final Logger log = LoggerFactory.getLogger(SecureKeyManager.class);

    private final Map<String, SecretKey> sessionKeys = new ConcurrentHashMap<>();
    private final Map<String, byte[]> rawKeys = new ConcurrentHashMap<>();
    private final SecureRandom secureRandom = new SecureRandom();
    private KeyStore keyStore;
    private char[] keyStorePassword;

  /** Returns a multimap containing the parameters of this media type. */
  public ImmutableListMultimap<String, String> parameters() {
    return parameters;
  }

  private Map<String, ImmutableMultiset<String>> parametersAsMap() {
    return Maps.transformValues(parameters.asMap(), ImmutableMultiset::copyOf);
  }

  /**
   * Returns an optional charset for the value of the charset parameter if it is specified.
   *