CaloRec::Arrayrep Node1 CaloRec::Arrayrep + m_data + m_shape + m_sizes + Arrayrep() + Arrayrep() + Arrayrep() + Arrayrep() + init_sizes() + write_array() + write_subarray() Node2 CxxUtils::WritableArrayData< N > + WritableArrayData() + WritableArrayData() Node1->Node2