node.js - File creation is ignoring my parameters but creates an "Untitled" binary file

Question

Using the Google API via the googleapis package and the file.create call simply does not work. I've experimented making the same call in Google's API Explorer and it does work. I'm at a bit of a loss.

The createSheet call is encapsulated as follows :

Google.prototype.createSheet = function(filename, callback) {
    var services = google.drive('v3');
    services.files.create({
      "name"     : filename,
      "mimeType" : "application/vnd.google-apps.spreadsheet",
      "description" : 'auto-generated by the cli',
      "auth"     : this.auth
    }, function(err,response) {
      if( err ) {
        console.log('Error : unable to create file, ' + err);
        return;
      } else {
        console.dir(response);
      }
    });
}

... the net result is,

{ kind: 'drive#file',
  id: '0BwWAQdfAgbYzWk5XRFQyODQ0Zmc',
  name: 'Untitled',
  mimeType: 'application/octet-stream' 
}

It's missing both the filename as well as the filetype.

The general framework here is working correctly as I can get a list of files and read from spreadsheets.