Help to finish creating the extension

Discuss
#1

Hi, so I’m having two difficulties finishing an extension.

The first is knowing how to create an “API Key” property, just like Airtable.
image

And the second is how do I get the return of a list

List<String> genres = new ArrayList<>();
 try {
  JSONArray jsonArray = json.getJSONArray("genres");
    for (int i = 0; i < jsonArray.length(); i++) {
   genres.add(jsonArray.getJSONObject(i).getString("name"));
}