CaloCellPrefetchIterator< T > Node1 CaloCellPrefetchIterator< T > - m_cellp - m_next_cellp - m_it - m_end + CaloCellPrefetchIterator() + CaloCellPrefetchIterator() + next() + operator*() + getParameter() - init() Node2 CaloEvent_detail::paramholder < T, T::iterator_category >   + getParameter() - next() - fetch() Node2->Node1