How to register a new gazebo environment?

[brian2lee]

I'm new to this gym gazebo thing. I've created a custom gazebo world with .world, urdf for models and bot, and .launch for launching it. How do I import all these into gym for rl? I don't really get how to use the template folder as there doesn't seem to have a place for me to put the launch file in the code. Is there a more detailed tutorial then the official website?