Creating subcommands

Hi,
Thanks for a very useful tool!

I can't seem to figure out how to create subcommands like `$ docker container rm <containerName>.`

If i try adding the path: /container/rm/{containerName}, the command will be created as `$ docker container-rm <containerName>`

This is the first time that I am using both OpenAPI and this tool, so I am in no way an expert.

Thanks!