}

        @Override
        public void processUrl(String url) {
        }

        @Override
        public void clear() {
        }
    }

    /**
     * Test implementation of RuleManager for testing
     */
    private static class TestRuleManager implements RuleManager {
        @Override
        public Rule getRule(ResponseData responseData) {
            return null;
        }

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void clear() {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the table unmodified.
   *
   * @throws UnsupportedOperationException always

        } finally {
            lock.writeLock().unlock();
        }
    }
    
    public void invalidate() {
        lock.writeLock().lock();
        try {
            children.clear();
            isComplete = false;
            hasChanges = true;
        } finally {
            lock.writeLock().unlock();
        }
    }
}
```

### 4.3 Directory Lease Manager
```java

import org.codelibs.fess.opensearch.config.exentity.CrawlingConfig.ConfigName;
import org.codelibs.fess.unit.UnitFessTestCase;

public class ParameterUtilTest extends UnitFessTestCase {

    @Override
    public void setUp() throws Exception {
        super.setUp();
        FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getAppEncryptPropertyPattern() {

 *       worse, and possibly better, than creating a mutable collection and copying it.
 *   <li>Implementations generally do not cache hash codes. If your element or key type has a slow
 *       {@code hashCode} implementation, it should cache it itself.
 * </ul>
 *
 * <h4>Example usage</h4>
 *
 * {@snippet :
 * class Foo {

   * described in the class documentation.
   *
   * @throws NullPointerException if any of {@code elements} is null
   * @since 6.0
   */
  public static <E> ImmutableMultiset<E> copyOf(E[] elements) {
    return copyFromElements(elements);
  }

  /**
   * Returns an immutable multiset containing the given elements, in the "grouped iteration order"
   * described in the class documentation.
   *

import org.dbflute.utflute.core.PlainTestCase;

/**
 * Test class for Transformer interface.
 * Tests the contract and behavior of Transformer implementations.
 */
public class TransformerTest extends PlainTestCase {

    /**
     * Basic test implementation of Transformer
     */
    public static class TestTransformer implements Transformer {
        private String name;

        AuthenticationRateLimiter.RateLimiterStats stats = rateLimiter.getStats();
        assertTrue(stats.getActiveAccounts() > 0);

        // Reset
        rateLimiter.reset();

        // State should be cleared
        stats = rateLimiter.getStats();
        assertEquals(0, stats.getTotalBlocked());
        assertEquals(0, stats.getAccountsLocked());
        assertEquals(0, stats.getIpsBlocked());

    }

    // Test that process method is abstract
    public void test_processMethodIsAbstract() throws Exception {
        try {
            java.lang.reflect.Method processMethod =
                    CorsHandler.class.getDeclaredMethod("process", String.class, ServletRequest.class, ServletResponse.class);

        return;
      }
    }
    fail("No bridge method found");
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public void testAsMapBridgeMethods() {
    for (Method m : TreeMultimap.class.getMethods()) {
      if (m.getName().equals("asMap") && m.getReturnType().equals(SortedMap.class)) {
        return;
      }
    }
  }