if (result == null) {
        result = Platform.preservesInsertionOrderOnPutsMap();
        builderMap = result;
      }
      return result;
    }

    ImmutableCollection.Builder<V> newValueCollectionBuilderWithExpectedSize(int expectedSize) {
      return ImmutableList.builderWithExpectedSize(expectedSize);
    }

    /**
     * Provides a hint for how many values will be associated with each key newly added to the

     */
    public Builder() {}

    Builder(int expectedKeys) {
      super(expectedKeys);
    }

    @Override
    ImmutableCollection.Builder<V> newValueCollectionBuilderWithExpectedSize(int expectedSize) {
      return (valueComparator == null)
          ? ImmutableSet.builderWithExpectedSize(expectedSize)
          : new ImmutableSortedSet.Builder<V>(valueComparator, expectedSize);
    }

     */
    public Builder() {}

    Builder(int expectedKeys) {
      super(expectedKeys);
    }

    @Override
    ImmutableCollection.Builder<V> newValueCollectionBuilderWithExpectedSize(int expectedSize) {
      return (valueComparator == null)
          ? ImmutableSet.builderWithExpectedSize(expectedSize)
          : new ImmutableSortedSet.Builder<V>(valueComparator, expectedSize);
    }