NSString.fromPointer constructor
Implementation
NSString.fromPointer(Pointer<Void> ptr) : super.fromPointer(ptr) {
Pointer<Uint64> length = calloc<Uint64>();
Pointer<Void> result = convertNSStringToUTF16(ptr, length);
Uint16List list = result.cast<Uint16>().asTypedList(length.value);
calloc.free(length);
raw = String.fromCharCodes(list);
}