code: public List<TableRef> getMappedTables() {
          List<TableRef> list = new ArrayList<TableRef>();
          for (TableRef tbn : mappedClasses.keySet()) {
              list.add(tbn);
          }
          return list;
      }
docs: Returns the <code>TableRef</code>s to all tables mapped by this <code>AutoMapper</code>.
  
  @return the <code>TableRef</code>s to all the tables mapped by this <code>AutoMapper</code>.
  @throws IllegalStateException if the map() method has not been invoked first.