ServiceMaterial Node1 ServiceMaterial + ServiceMaterial() + ServiceMaterial() + ServiceMaterial() + name() + components() + addEntry() + addEntry() + multiply() + dump() Node2 std::string Node2->Node1 -m_name Node5 ServiceMaterial::Entry + number + linear + weight + Entry() + Entry() Node2->Node5 +name Node3 std::basic_string< char > Node3->Node2 Node4 std::vector< ServiceMaterial ::Entry > Node4->Node1 -m_components Node5->Node4 +elements