}

    /**
     * Converts the given object to a {@link Long}.
     *
     * @param o
     *            the object to convert
     * @return the converted {@link Long}
     */
    public static Long toLong(final Object o) {
        return toLong(o, null);
    }

    /**
     * Converts the given object to a {@link Long}.
     *
     * @param o
     *            the object to convert
     * @param pattern

  }

  @Override
  public boolean contains(@Nullable Object rowKey, @Nullable Object columnKey) {
    return delegate().contains(rowKey, columnKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    return delegate().containsColumn(columnKey);
  }

  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return delegate().containsRow(rowKey);
  }

  @Override

      return false;
    }
  }

  /**
   * A sensible default implementation of {@link #subMap(Object, Object)} in terms of {@link
   * #headMap(Object)} and {@link #tailMap(Object)}. In some situations, you may wish to override
   * {@link #subMap(Object, Object)} to forward to this implementation.
   *
   * @since 7.0
   */
  protected SortedMap<K, V> standardSubMap(K fromKey, K toKey) {

public abstract class TestCollidingSetGenerator implements TestSetGenerator<Object> {
  @Override
  public SampleElements<Object> samples() {
    return new Colliders();
  }

  @Override
  public Object[] createArray(int length) {
    return new Object[length];
  }

  /** Returns the original element list, unchanged. */
  @Override
  public List<Object> order(List<Object> insertionOrder) {
    return insertionOrder;
  }

          }
        };
      }

      @Override
      public Object[] toArray() {
        /*
         * standardToArray returns `@Nullable Object[]` rather than `Object[]` but only because it
         * can be used with collections that may contain null. This collection is a collection of
         * non-null Entry objects (Entry objects that might contain null values but are not

  }

  @Override
  public boolean equals(@Nullable Object object) {
    return object == this || delegate().equals(object);
  }

  @Override
  public int hashCode() {
    return delegate().hashCode();
  }

  /**
   * A sensible default implementation of {@link #add(Object)}, in terms of {@link #add(int,
   * Object)}. If you override {@link #add(int, Object)}, you may wish to override {@link

class ImmutableCollections {

    private static final Map<?, ?> EMPTY_MAP = new AbstractImmutableMap<>() {
        @Override
        public Set<Entry<Object, Object>> entrySet() {
            return new AbstractImmutableSet<>() {
                @Override
                public Iterator<Entry<Object, Object>> iterator() {
                    return new Iterator<>() {
                        @Override
                        public boolean hasNext() {

  }

  static boolean equalsImpl(Multimap<?, ?> multimap, @Nullable Object object) {
    if (object == multimap) {
      return true;
    }
    if (object instanceof Multimap) {
      Multimap<?, ?> that = (Multimap<?, ?>) object;
      return multimap.asMap().equals(that.asMap());
    }
    return false;
  }

  }

  static boolean equalsImpl(Multimap<?, ?> multimap, @Nullable Object object) {
    if (object == multimap) {
      return true;
    }
    if (object instanceof Multimap) {
      Multimap<?, ?> that = (Multimap<?, ?>) object;
      return multimap.asMap().equals(that.asMap());
    }
    return false;
  }

public class ChainBenchmark {

  @Param({"1", "2", "3", "4", "5", "6"})
  int length;

  private Segment<Object, Object> segment;
  private ReferenceEntry<Object, Object> head;
  private @Nullable ReferenceEntry<Object, Object> chain;

  @SuppressWarnings("GuardedBy")
  @BeforeExperiment
  void setUp() {
    LocalCache<Object, Object> cache =
        new LocalCache<>(CacheBuilder.newBuilder().concurrencyLevel(1), null);