clone method
Creates a copy of the existing string.
Implementation
HString clone() {
if (handle == 0) return const HString.empty();
return using((arena) {
final pNewString = arena<HSTRING>();
final hr = WindowsDuplicateString(handle, pNewString);
if (FAILED(hr)) throwWindowsException(hr);
return HString._(pNewString.value);
});
}