Function StringIteratorUTF16

Libraries/Strings/StringIterator.h:265–265

  private:
    using StringIterator::StringIterator;
    constexpr StringIteratorUTF16(const CodeUnit* it, const CodeUnit* end) : StringIterator(it, end) {}
    using Parent = StringIterator<StringIteratorUTF16>;
    friend Parent;
    friend struct StringView;