CP::SelectionReadAccessorNull Node1 CP::SelectionReadAccessorNull - m_value + SelectionReadAccessorNull() + getBits() + getBool() + label() + isBool() + getInputAffecting() + fillSystematics() Node2 CP::ISelectionReadAccessor + ~ISelectionReadAccessor() + getBits() + getBool() + label() + isBool() + getInputAffecting() + fillSystematics() - operator=() Node2->Node1