* returns collections whose iterators follow the ordering in which the data was added to the
 * multimap.
 *
 * <p>The collections returned by {@code keySet}, {@code keys}, and {@code asMap} iterate through
 * the keys in the order they were first added to the multimap. Similarly, {@code get}, {@code
 * removeAll}, and {@code replaceValues} return collections that iterate through the values in the

        Integer value = getOnlyElement(entry.getValue());
        builder.put(entry.getKey(), value);
      }
      return builder.buildOrThrow().asMultimap().asMap();
    }

    @Override
    @SuppressWarnings({"unchecked", "rawtypes"}) // needed for arrays
    public Entry<String, Collection<Integer>>[] createArray(int length) {
      return new Entry[length];
    }

    LoadingCache<Object, Object> cache =
        builder.build(CacheLoader.from(Suppliers.ofInstance(value)));
    assertSame(value, cache.getUnchecked(key));
    assertEquals(0, cache.size());
    assertFalse(cache.asMap().containsKey(key));
  }

  public void testCacheBuilderFrom_string() {
    CacheBuilder<?, ?> fromString =
        CacheBuilder.from(
            "initialCapacity=10,maximumSize=20,concurrencyLevel=30,"

    return graph.isDirected()
        ? DirectedGraphConnections.ofImmutable(
            node, graph.incidentEdges(node), successorNodeToValueFn)
        : UndirectedGraphConnections.ofImmutable(
            Maps.asMap(graph.adjacentNodes(node), successorNodeToValueFn));
  }

  /**
   * A builder for creating {@link ImmutableValueGraph} instances, especially {@code static final}
   * graphs. Example:
   *
   * {@snippet :

  }

  public void testOrderedAsMapEntries() {
    TreeMultimap<@Nullable String, @Nullable Integer> multimap = createPopulate();
    Iterator<Entry<String, Collection<Integer>>> iterator = multimap.asMap().entrySet().iterator();
    Entry<String, Collection<Integer>> entry = iterator.next();
    assertEquals(null, entry.getKey());
    assertThat(entry.getValue()).containsExactly(7, 3, 1);
    entry = iterator.next();

    // add a non-serializable entry
    one.getUnchecked(new Object());
    assertEquals(1, one.size());
    assertFalse(one.asMap().isEmpty());
    LocalLoadingCache<Object, Object> two = SerializableTester.reserialize(one);
    assertEquals(0, two.size());
    assertTrue(two.asMap().isEmpty());

    LocalCache<Object, Object> localCacheOne = one.localCache;
    LocalCache<Object, Object> localCacheTwo = two.localCache;

   * {@code ConcurrentMap} documentation. They will not function correctly and it is impossible for
   * Guava to fix them until Guava is ready to <i>require</i> Java 8 for all users.
   */
  ConcurrentMap<K, V> asMap();

  /**
   * Performs any pending maintenance operations needed by the cache. Exactly which activities are
   * performed -- if any -- is implementation-dependent.
   */
  void cleanUp();

                MapFeature.REJECTS_DUPLICATES_AT_CREATION,
                CollectionFeature.KNOWN_ORDER,
                CollectionFeature.ALLOWS_NULL_QUERIES)
            .named("ImmutableMap.asMultimap.asMap")
            .createTestSuite());

    suite.addTest(
        CollectionTestSuiteBuilder.using(new ImmutableMapUnhashableValuesGenerator())
            .withFeatures(
                CollectionSize.ANY,

    LoadingCache<Object, Object> cache =
        builder.build(CacheLoader.from(Suppliers.ofInstance(value)));
    assertSame(value, cache.getUnchecked(key));
    assertEquals(0, cache.size());
    assertFalse(cache.asMap().containsKey(key));
  }

  public void testCacheBuilderFrom_string() {
    CacheBuilder<?, ?> fromString =
        CacheBuilder.from(
            "initialCapacity=10,maximumSize=20,concurrencyLevel=30,"

     */
    @PreDestroy
    public void destroy() {
        if (logger.isDebugEnabled()) {
            logger.debug("cache stats: {}", statsCache.stats());
        }
        statsCache.asMap().entrySet().stream().forEach(e -> {
            final StatsObject data = e.getValue();
            final Long begin = data.remove(BEGIN_KEY);
            if (begin != null) {