@Override
  public boolean contains(@Nullable Object rowKey, @Nullable Object columnKey) {
    return get(rowKey, columnKey) != null;
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    return values().contains(value);
  }

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

      for (int i = WARMUP_MIN; i < WARMUP_MAX; i++) {
        Entry<Object, Object> entry = warmed.get(i - WARMUP_MIN);
        assertThat(cache.asMap().containsKey(entry.getKey())).isTrue();
        assertThat(cache.asMap().containsValue(entry.getValue())).isTrue();
        // this getUnchecked() call shouldn't be a cache miss; verified below
        assertThat(cache.getUnchecked(entry.getKey())).isEqualTo(entry.getValue());
      }

  }

  @Override
  public boolean isEmpty() {
    return size() == 0;
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    Map<K, V> delegate = delegateOrNull();
    if (delegate != null) {
      return delegate.containsValue(value);
    }
    for (int i = 0; i < size; i++) {
      if (Objects.equals(value, value(i))) {
        return true;
      }
    }

    return head == null;
  }

  @Override
  public boolean containsKey(@Nullable Object key) {
    return keyToKeyList.containsKey(key);
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    return values().contains(value);
  }

  // Modification Operations

  /**
   * Stores a key-value pair in the multimap.
   *

    @Override
    public int size() {
        return size;
    }

    @Override
    public boolean isEmpty() {
        return size == 0;
    }

    @Override
    public boolean containsValue(final Object value) {
        return indexOf(value) >= 0;
    }

    /**
     * Returns the index for the specified value.
     *
     * @param value
     *            the value

   * constructed.
   */
  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return rowKeyToIndex.containsKey(rowKey);
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    for (@Nullable V[] row : array) {
      for (V element : row) {
        if (Objects.equals(value, element)) {
          return true;
        }
      }
    }

   * constructed.
   */
  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return rowKeyToIndex.containsKey(rowKey);
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    for (@Nullable V[] row : array) {
      for (V element : row) {
        if (Objects.equals(value, element)) {
          return true;
        }
      }
    }

    assertEquals(multimap.hashCode(), multimapView.hashCode());
    assertEquals(multimap.size(), multimapView.size());
    assertTrue(multimapView.containsKey("foo"));
    assertTrue(multimapView.containsValue(1));
    assertTrue(multimapView.containsEntry("bar", 2));
    assertEquals(singleton(1), multimapView.get("foo"));
    assertEquals(singleton(2), multimapView.get("bar"));

    return new SuccessorsFunction<Character>() {
      @Override
      public Iterable<? extends Character> successors(Character node) {
        checkArgument(
            graphMap.containsKey(node) || graphMap.containsValue(node),
            "Node %s is not an element of this graph",
            node);
        return Ordering.natural().immutableSortedCopy(graphMap.get(node));
      }
    };
  }

void flush(); public Object get(Object); private Object getCacheMissed(Object, int); public Object put(Object, Object); public Object remove(Object); public boolean containsKey(Object); public int size(); public boolean isEmpty(); public boolean containsValue(Object); public void putAll(java.util.Map); public void clear(); public java.util.Set keySet(); public java.util.Collection values(); public java.util.Set entrySet(); public boolean equals(Object); public int hashCode(); } org/codehaus/plexus/...