CaloTowerSeg::SubSegIterator< TOWER_ITERATOR > Node1 CaloTowerSeg::SubSegIterator < TOWER_ITERATOR > - m_nphi - m_nphi_skip - m_phipos - m_phipos2 - m_itower + SubSegIterator() + operator++() + itower() + make() Node2 TOWER_ITERATOR Node2->Node1