Question: how to filter for non-empty list?

[jamesbraza]

Is there a filter for filtering out a non-empty list using Django Dynamic REST?

Here is the filter options as of v2.1.7: https://github.com/AltSchool/dynamic-rest/blob/v2.1.7/dynamic_rest/filters.py#L190-L214

I was hoping filter{list_field.isnull}=false could work, but it's not filtering for unempty lists