IdBlock block = cd.getIDBlock(blockSize);
IdBlock block = cfd.getIdBlock(blockSize);
   protected void getNextBlock() throws JMSException   {      IdBlock block = cd.getIDBlock(blockSize);      nextID = block.getLow();      high = block.getHigh();      if (trace) { log.trace("Got block of IDs from server, low=" + nextID + " high=" + high); }   }