Can you filter for null values in the list_filter_text for an API call?

Jeffrey Kaplan 3

I'm trying to use getParticipants to fetch participants who are not on a team.

Ideally I would use &list_filter_column=team_name&list_filter_text=null since the api response for users not on a team is “team_name: null,” but using this method to filter converts the filter text to a string and matches on that. Is there a way to encode a null value in this search or otherwise filter individuals? The same thing happens if you just use “&team_name=null”

I would filter the results manually client side but I'm trying to query across multiple events, so would prefer to have it done server side before the response is sent in order to reduce the required pagination of results.