code: public void add(Item item, TransactionCommon transaction)
                      throws MessageStoreException, SIResourceException {
          if (TraceComponent.isAnyTracingEnabled()
              && tc.isEntryEnabled())
              SibTr.entry(tc, "add", new Object[] { item, transaction });
  
          Transaction msTran = resolveAndEnlistMsgStoreTransaction(transaction);
          _persistentStore.addItem(item, msTran);
  
          if (TraceComponent.isAnyTracingEnabled()
              && tc.isEntryEnabled())
              SibTr.exit(tc, "add");
      }
docs: Add an item to the Message Processor ItemStream.
  
  @throws SIResourceException
  
  @see com.ibm.ws.sib.msgstore.AbstractItem#add(Item, Transaction)