You're reading the documentation for an obsolete version. For the latest released version, please have a look at v10.9.
8. Usage in URCapX
Look at “simple-ros2-node”, and “simple-gripper” URCapX examples in Polyscope X documentation.
ROS2 communication from URCapX is normally limited to the physical robot (running program, realtime data, UI). If URCapX should communicate with external nodes, then additional configuration is needed.
8.1 Dockerized C++ daemon
Look at “ROS2 - Backend Contribution” in Polyscope X documentation.
8.2 Using ROS in PSX frontend
Look at “ROS2 - Frontend Contribution” in Polyscope X documentation.