SG::ArenaAllocatorBase::initParams< T, clear, no_ctor, no_dtor > Node1 SG::ArenaAllocatorBase ::initParams< T, clear, no_ctor, no_dtor > - m_nblock + initParams() + params() + operator Params() Node2 std::string Node2->Node1 -m_name Node3 std::basic_string< char > Node3->Node2