How to filter appProperty where null is in Google Drive API?

I'm trying to filter files where property is null and where property has {key = 1 and value = 1} at the same time?

Here is my query string sent in the request:

'q'=>"'$FolderId' in parents 
    and (appProperties has null or appProperties has { key='1_id' and 
    value='1' })"