return new MultimapBuilderWithKeys<@Nullable Object>() {
      @Override
      <K extends @Nullable Object, V extends @Nullable Object> Map<K, Collection<V>> createMap() {
        return Platform.newLinkedHashMapWithExpectedSize(expectedKeys);
      }
    };
  }

  /**
   * Uses a naturally-ordered {@link TreeMap} to map keys to value collections.
   *

   * @since 19.0
   */
  @SuppressWarnings("NonApiType") // acts as a direct substitute for a constructor call
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMap<K, V> newLinkedHashMapWithExpectedSize(int expectedSize) {
    return new LinkedHashMap<>(capacity(expectedSize));
  }

  /**
   * Creates a new empty {@link ConcurrentHashMap} instance.
   *
   * @since 3.0
   */

   * @since 19.0
   */
  @SuppressWarnings("NonApiType") // acts as a direct substitute for a constructor call
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMap<K, V> newLinkedHashMapWithExpectedSize(int expectedSize) {
    return new LinkedHashMap<>(capacity(expectedSize));
  }

  /**
   * Creates a new empty {@link ConcurrentHashMap} instance.
   *
   * @since 3.0
   */