docs: void addToCommittedQueue(Session session, Object[] list) {
  
          synchronized (committedTransactionTimestamps) {
  
              // add the txList according to commit timestamp
              committedTransactions.addLast(list);
  
              // get session commit timestamp
              committedTransactionTimestamps.addLast(session.actionTimestamp);
  /* debug 190
              if (committedTransactions.size() > 64) {
                  System.out.println("******* excessive transaction queue");
              }
  // debug 190 */
          }
      }