- IGN_PLUGIN_REGISTER_MORE_TRANS_UNITS : gz/plugin/RegisterMore.hh
- IGNITION_ADD_FACTORY : gz/plugin/Register.hh
- IGNITION_ADD_FACTORY_ALIAS : gz/plugin/Register.hh
- IGNITION_ADD_PLUGIN : gz/plugin/Register.hh
- IGNITION_ADD_PLUGIN_ALIAS : gz/plugin/Register.hh