Missing or incomplete custom-card schema / built-in form editor / Selector documentation

[Bettlaken]

Hello,

I am currently working on a custom card and have come across this documentation: Custom.card.md.

Under "Using the built-in form editor," there is an example of how to define the getConfigForm method to create a schema that defines the configuration form. Is there any additional documentation on the syntax, the different selectors, and, for instance, how to nest them to create more complex configurations? Specifically, I am interested in allowing users to create a list of entities where each entity has a text selector and a boolean selector.

Additional resources I found:

selector.py
Selectors

If I could gather more information, I would be able to create a PR to extend the documentation myself.

Thank you for your input and the great work so far!