List<TwitterOperation> trace = Collections.unmodifiableList(transSel.readAll());
transSel.close();
ArrayList<Worker> workers = new ArrayList<Worker>();
for (int i = 0; i < workConf.getTerminals(); ++i) {
TransactionGenerator<TwitterOperation> generator =
new TraceTransactionGenerator(trace);
workers.add(new TwitterWorker(i, this, generator));
} // FOR
return workers;
}