Hello! I’m currently working on a module using wicket to develop the configuration page but I’m having a hard time figuring out how to create a custom button, just like this one:
If anyone has any tips I’d really appreciate it!
Even in 8.1 this is actually a React page, not a Wicket page. I don't think we ever made a public document explaining how to set up a React config page in 8.1.
You might be able to do something with a custom "editor source", if all you need is a button, see this post for some possible inspiration: