How to Remove GraphQL Fields Based on Other Fields in Gatsby

How do you remove a GraphQL field based on another field, on a Gatsby page query?

https://stackoverflow.com/questions/68714301/how-to-remove-graphql-fields-according-to-other-fields-in-gatsby

I replied on SO! https://stackoverflow.com/a/68714959/1285253

Thanks for your reply! Query Filters seem to only allow to filter fields based on the values of those same fields. I want to remove the URL field based on the sibling “public” field. If the video is not public, remove the URL. Otherwise, include it.