assertEquals("Complex response", response.getWrittenContent());
        assertTrue(chain.wasDoFilterCalled());
    }

    // Test implementation classes

    private static class TestWebApiManager implements WebApiManager {
        private final String basePath;
        private boolean processCalled = false;

        public TestWebApiManager(String basePath) {
            this.basePath = basePath;
        }

      public DummyCountDownLatch() {
        super(0);
      }
    }

    @Keep
    public static final class DummyRunnable implements Runnable, Serializable {
      @Override
      public void run() {}
    }

    @Keep
    public static final class DummyThreadFactory implements ThreadFactory, Serializable {
      @Override
      public Thread newThread(Runnable r) {
        return new Thread(r);
      }

import org.opensearch.action.index.IndexRequestBuilder;

/**
 * The abstract entity for Elasticsearch.
 *
 * @author ESFlute (using FreeGen)
 */
public abstract class EsAbstractEntity implements Entity, Serializable, Cloneable {

    // ===================================================================================
    //                                                                          Definition

import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.index.IndexRequestBuilder;

/**
 * @author ESFlute (using FreeGen)
 */
public abstract class EsAbstractEntity implements Entity, Serializable, Cloneable {

    // ===================================================================================
    //                                                                          Definition

      }

      @Override
      public void tearDown() throws IOException {
        factory.tearDown();
      }
    };
  }

  private static class StringSourceFactory implements CharSourceFactory {

    @Override
    public CharSource createSource(String data) throws IOException {
      return CharSource.wrap(data);
    }

    @Override

        assertThat(expected).hasMessageThat().contains(message);
      }
      return;
    }
    fail("expected failure not reported");
  }

  private class ForwardingRunnable implements Runnable {

    private final Runnable runnable;

    ForwardingRunnable(Runnable runnable) {
      this.runnable = runnable;
    }

    @Override
    public void run() {
      runnable.run();

        }

        public Function<?, ?> getLastFunction() {
            return lastFunction;
        }
    }

    // Inner class for test credential
    private static class TestLoginCredential implements LoginCredential {
        private final String username;
        private final String password;

        public TestLoginCredential(String username, String password) {
            this.username = username;

 */
@GwtCompatible
@SuppressWarnings("WrongCommentType") // false positive
abstract class AbstractMapBasedMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimap<K, V> implements Serializable {
  /*
   * Here's an outline of the overall design.
   *
   * The map variable contains the collection of values associated with each

  public final <F> Equivalence<F> onResultOf(Function<? super F, ? extends @Nullable T> function) {
    return new FunctionalEquivalence<>(function, this);
  }

  /**
   * Returns a wrapper of {@code reference} that implements {@link Wrapper#equals(Object)
   * Object.equals()} such that {@code wrap(a).equals(wrap(b))} if and only if {@code equivalent(a,
   * b)}.
   *

    private static class TestLoginCredential implements LoginCredential {
        private final String username;

        public TestLoginCredential(String username) {
            this.username = username;
        }

        @Override
        public String toString() {
            return username;
        }
    }

    private static class TestSsoAuthenticator implements SsoAuthenticator {