return array;
  }

  protected V getValueForNullKey() {
    return getEntryNullReplaces().getValue();
  }

  protected K getKeyForNullValue() {
    return getEntryNullReplaces().getKey();
  }

  private Entry<K, V> getEntryNullReplaces() {
    Iterator<Entry<K, V>> entries = getSampleElements().iterator();
    for (int i = 0; i < getNullLocation(); i++) {
      entries.next();
    }
    return entries.next();
  }

 * Tests for {@code ImmutableRangeMap}.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // NavigableMap
public class ImmutableRangeMapTest extends TestCase {
  private static final ImmutableList<Range<Integer>> RANGES;
  private static final int MIN_BOUND = 0;
  private static final int MAX_BOUND = 10;

  static {
    ImmutableList.Builder<Range<Integer>> builder = ImmutableList.builder();

    builder.add(Range.<Integer>all());

 *
 * @author Robert Konigsberg
 * @author Louis Wasserman
 */
public class ForwardingNavigableMapTest extends TestCase {
  static class StandardImplForwardingNavigableMap<K, V> extends ForwardingNavigableMap<K, V> {
    private final NavigableMap<K, V> backingMap;

    StandardImplForwardingNavigableMap(NavigableMap<K, V> backingMap) {
      this.backingMap = backingMap;
    }

    @Override
    protected NavigableMap<K, V> delegate() {

    }

    @GwtIncompatible
    @J2ktIncompatible
    private void readObject(ObjectInputStream stream) throws InvalidObjectException {
      throw new InvalidObjectException("Use KeysSerializedForm");
    }
  }

  @GwtIncompatible
  @J2ktIncompatible
  private static final class KeysSerializedForm implements Serializable {
    final ImmutableMultimap<?, ?> multimap;

   *
   * @since 2.0
   */
  public static final class Builder<E> extends ImmutableSet.Builder<E> {
    private final Comparator<? super E> comparator;
    private E[] elements;
    private int n;

    /**
     * Creates a new builder. The returned builder is equivalent to the builder generated by {@link
     * ImmutableSortedSet#orderedBy}.
     */
    /*

    //                                                                           Singleton
    //                                                                           =========
    private static final RelatedQueryDbm _instance = new RelatedQueryDbm();

    private RelatedQueryDbm() {
    }

    public static RelatedQueryDbm getInstance() {
        return _instance;
    }

    //                                                                           Singleton
    //                                                                           =========
    private static final RequestHeaderDbm _instance = new RequestHeaderDbm();

    private RequestHeaderDbm() {
    }

    public static RequestHeaderDbm getInstance() {
        return _instance;
    }

    //                                                                           Singleton
    //                                                                           =========
    private static final RoleTypeDbm _instance = new RoleTypeDbm();

    private RoleTypeDbm() {
    }

    public static RoleTypeDbm getInstance() {
        return _instance;
    }

    //                                                                           Singleton
    //                                                                           =========
    private static final BoostDocumentRuleDbm _instance = new BoostDocumentRuleDbm();

    private BoostDocumentRuleDbm() {
    }

    public static BoostDocumentRuleDbm getInstance() {
        return _instance;
    }

    //                                                                           Singleton
    //                                                                           =========
    private static final DuplicateHostDbm _instance = new DuplicateHostDbm();

    private DuplicateHostDbm() {
    }

    public static DuplicateHostDbm getInstance() {
        return _instance;
    }