How to use "listFilters" in extension 2.0 yaml

[jun_phoon]

Hi, 

I'm trying to create an overview screen of the custom devices I have discovered with their attributes

I have defined the view in the extensions.yaml using 

"screens:

        - entitytype"

How do I create a filter field in the screens for the list of custom instances ? 

I had a look at listFilters from the F5 extension as an example, i.e the below as the entity I have created has a Name attribute as well, but the filter is just stuck on the  'spinning circle'

    listFilters:
      relationships: []
      entityFilters:
        - displayName: Name
          filters:
            - type: entityAttribute
              displayName: Name
              freeText: true
              modifier: contains
              defaultSearch: true
              distinct: false