public KeyTransactionCache keyTransactions(long applicationId)
    {
        KeyTransactionCache cache = keyTransactions.get(applicationId);
        if(cache == null)
            keyTransactions.put(applicationId, cache = new KeyTransactionCache(applicationId));
        return cache;
    }
public KeyTransactionCache keyTransactions ( long applicationId ) { KeyTransactionCache cache = keyTransactions . get ( applicationId ) ; if ( cache == null ) keyTransactions . put ( applicationId , cache = new KeyTransactionCache ( applicationId ) ) ; return cache ; }
Returns the cache of key transactions for the given application, creating one if it doesn't exist .
@param applicationId The id of the application for the cache of key transactions
@return The cache of key transactions for the given application