uSync 9: disabling handlers & schema issues

Questions
1

How do you disable handlers in a set in uSync 9?

For example, in development we want to import content/media, but not in test/production.

This was easy with uSync 8.

The documentation mentions handlers and disabledHandlers on sets, but not how to configure those properties. Is it just a list of named handlers? Are the names the same as in uSync 8?

Also,

  • the uSync setting schema file in App_Plugins was not updated to match the documentation when updating the NuGet package.

  • the documented uSync settings schema has at least two typos (ExportAtStatup and Enalbed) that don’t match the example settings. I’m not sure whether to use the example settings or the schema settings.

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/107340-usync-9-disabling-handlers-schema-issues