public void run() {
multiMap.put(key, "value");
final TransactionContext context = client.newTransactionContext();
try {
context.beginTransaction();
final TransactionalMultiMap txnMultiMap = context.getMultiMap(mapName);
txnMultiMap.put(key, "value");
txnMultiMap.put(key, "value1");
txnMultiMap.put(key, "value2");
assertEquals(3, txnMultiMap.get(key).size());