I am trying desperately to get notifications to not show up for emails. When adding, and removing people, I want there to be 0 chance at the person getting notified.

I've tried addEditor/removeEditor, and now I'm trying Google's Drive API - Here is my sample code - Thanks so much in advance:

function addPermission() {
  fol = DriveApp.getFolderById('string here') //Normally an actual ID in String Type. Removed for confidentiality.
  
  files = fol.getFiles();
  
  while (files.hasNext())
  {
    var file = files.next();
    
Drive.Permissions.insert(
    {
      'role': 'writer',
      'type': 'user',
      'value': 'email' //I put in an email in the string - Removed for confidentiality
    },
    file.getId(),
    {
      'sendNotificationEmails': false
    }
   );
  }

  folders = fol.getFolders();

}