Why are robot_name_space and controllers_list not initialized with specific parameters in each robot_env?

Hello everyone,

While I investigate the implementation of the robot_env files for each robot, I notice that the variables “robot_name_space” and “controllers_list” are initialized not with particular parameters but with blank in the files. If they are declared as blank variables, how does Gazebo identify the objects it processes?

Since I am not sure whether this question related to my other question (Iri_wam does not start to learn), I post this question separately. But, the answer to this very question may give me the insight to clear the other question. So, I really appreciate it if I could pick the experts’ brains on this community.

Thank you,