Example of a snippet for filter options

Questions
1

What would be an example of a snippet that would be used to dynamically set filter options?

This thingy:

2

Here is an example from our tutorials:  http://help.skuidify.com/m/models-conditions-filters/l/204980-use-a-snippet-as-a-filter-item-source-…

3

Thanks Rob, exactly what I needed.