FlavorTagDiscriminants::internal::BVarGetterNoDefault< T > Node1 FlavorTagDiscriminants ::internal::BVarGetterNoDefault< T > + BVarGetterNoDefault() + operator()() Node2 SG::ConstAccessor< T > # m_auxid + ConstAccessor() + ConstAccessor() + ConstAccessor() + operator()() + operator()() + withDefault() + withDefault() + getDataArray() + getDataSpan() + isAvailable() + auxid() # ConstAccessor() # ConstAccessor() Node2->Node1 -m_getter Node3 std::string Node3->Node1 -m_name Node4 std::basic_string< char > Node4->Node3