RMStore restoring a single transaction with hosted download

Question

How do i use RMStore to re-download (restore) an single in app purchase with out redownloading all in app purchases?

the following code will re-download all in-app purchases but this is not practical for cases where multiple in-app purchases with large downloads have been made:

[[RMStore defaultStore] restoreTransactionsOnSuccess:^{
    NSLog(@"Transactions restored");
} failure:^(NSError *error) {
    NSLog(@"Something went wrong");
}];

i'd like to do something like

[RMStore defaultStore] restoreTransactionWithIdentifier:productIdentifier];

Is this possible. how would i do this?