Method ConvertToUtf16String

test-app/runtime/src/main/cpp/ArgConverter.cpp:212–221

u16string ArgConverter::ConvertToUtf16String(const v8::Local<String>& s) {
    if (s.IsEmpty()) {
        return {};
    } else {
        auto str = ConvertToString(s);
        auto utf16str =  Util::ConvertFromUtf8ToUtf16(str);

        return utf16str;
    }
}