.build();

    ImmutableMap<Range<Integer>, Integer> test = nonEmptyRangeMap.asMapOfRanges();

    for (Range<Integer> range : test.keySet()) {
      SerializableTester.reserializeAndAssert(range);
    }

    SerializableTester.reserializeAndAssert(test.keySet());

    SerializableTester.reserializeAndAssert(nonEmptyRangeMap);
  }

        }
        logger.info("[END] testRead");
    }

    protected void testUpdate() {
        logger.info("[BEGIN] testUpdate");
        // Test: update settings api
        final Set<String> keySet = createTestParam(0).keySet();
        final Map<String, Object> updateMap = getUpdateMap();
        final Map<String, Object> searchBody = createSearchBody(SEARCH_ALL_NUM);
        List<Map<String, Object>> settings = getItemList(searchBody);

    cache.getUnchecked(one);
    Map<Object, Object> newMap = ImmutableMap.of(one, one);
    assertEquals(newMap, map);
    assertEquals(newMap.entrySet(), map.entrySet());
    assertEquals(newMap.keySet(), map.keySet());
    Set<Object> expectedValues = ImmutableSet.of(one);
    Set<Object> actualValues = ImmutableSet.copyOf(map.values());
    assertEquals(expectedValues, actualValues);
  }

  }

  @Override
  Map<K, Collection<V>> createAsMap() {
    return new AsMap();
  }

  @Override
  Set<K> createKeySet() {
    return asMap().keySet();
  }

  boolean removeEntriesIf(Predicate<? super Entry<K, Collection<V>>> predicate) {
    Iterator<Entry<K, Collection<V>>> entryIterator = unfiltered.asMap().entrySet().iterator();
    boolean changed = false;

    cache.getUnchecked(one);
    Map<Object, Object> newMap = ImmutableMap.of(one, one);
    assertEquals(newMap, map);
    assertEquals(newMap.entrySet(), map.entrySet());
    assertEquals(newMap.keySet(), map.keySet());
    Set<Object> expectedValues = ImmutableSet.of(one);
    Set<Object> actualValues = ImmutableSet.copyOf(map.values());
    assertEquals(expectedValues, actualValues);
  }

  @LazyInit @RetainedWith @CheckForNull private transient ImmutableSet<K> keySet;

  /**
   * Returns an immutable set of the keys in this map, in the same order that they appear in {@link
   * #entrySet}.
   */
  @Override
  public ImmutableSet<K> keySet() {
    ImmutableSet<K> result = keySet;
    return (result == null) ? keySet = createKeySet() : result;
  }

  /*

  }

  @Override
  ImmutableSet<K> createKeySet() {
    return new KeySet<>(this);
  }

  @GwtCompatible(emulated = true)
  private static final class KeySet<K> extends IndexedImmutableSet<K> {
    private final RegularImmutableMap<K, ?> map;

    KeySet(RegularImmutableMap<K, ?> map) {
      this.map = map;
    }

    @Override
    K get(int index) {

  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testReplaceNonEmptyValues() {
    List<K> keys = copyToList(multimap().keySet());
    List<V> values = asList(v0(), v2(), v3());

    for (K k : keys) {
      resetContainer();

      int size = multimap().size();
      Collection<V> oldKeyValues = copyToList(multimap().get(k));

                props.put(overrideName, substVars(value, name, props, callback));
            } else {
                props.put(name, substVars(value, name, props, callback));
            }
        }
        props.keySet().removeIf(k -> k.startsWith(OVERRIDE_PREFIX));
    }

    private static MavenProperties loadPropertiesFile(
            Path path, boolean failIfNotFound, Function<String, String> callback) throws IOException {

    @Nonnull
    public static Properties toProperties(Map<String, String> properties) {
        requireNonNull(properties, "properties");
        Properties map = new Properties();
        for (String key : properties.keySet()) {
            map.put(key, properties.get(key));
        }
        return map;
    }

    @Nonnull
    public static BasicInterpolator createInterpolator(Collection<Map<String, String>> properties) {