code: public synchronized Iterator iterator()
     {
  		if (tc.isEntryEnabled()) SibTr.entry(this, tc, "iterator");
        Iterator returnValue = idToConvTable.values().iterator();
  		if (tc.isEntryEnabled()) SibTr.exit(this, tc, "iterator", returnValue);
     	return returnValue;
     }
docs: Returns an iterator which iterates over the tables
  contents.  The values returned by this iterator are
  objects of type Conversation.
  @return Iterator