InstantiateObject
static status_t InstantiateObject(BMessage* archive,
BUnarchiver::InstantiateObject<BArchivable>(BMessage* from,
status_t err = InstantiateObject(archive, interim);
BUnarchiver::InstantiateObject<BArchivable>(BMessage* from,
err = BUnarchiver::InstantiateObject(&archive, clone);
status_t err = BUnarchiver::InstantiateObject(&archive, clone);