protected abstract TransactionOutputChanges connectTransactions(StoredBlock newBlock) throws VerificationException, BlockStoreException, PrunedException ;

protected abstract TransactionOutputChanges connectTransactions ( StoredBlock newBlock ) throws VerificationException , BlockStoreException , PrunedException ;
load newblock from blockstore and connect its transactions , returning changes to the set of unspent transactions . if an error is encountered in a transaction , no changes should be made to the underlying blockstore . only called if ( shouldverifytransactions ( ) )
