code: public void queueObject (@Nonnull final IIndexerWorkItem aItem)
    {
      ValueEnforcer.notNull (aItem, "Item");
      m_aImmediateCollector.queueObject (aItem);
    }
docs: Queue a work item and handle it asynchronously.
  
  @param aItem
  The item to be added. May not be <code>null</code>.