code: public void ensureHandlers(int index) {
  
          if (m_handlers.size() <= index) {
              // make sure the handler maps are available
              // this may be necessary
              for (int i = m_handlers.size(); i <= index; i++) {
                  insertHandlers(i);
              }
          }
      }
docs: Ensures attribute handler maps are available up to the specified index.<p>
  This is required during inline editing, where only a fragment of the handlers data structure is build and used.<p>
  
  @param index the index of the currently edited attribute