llow the user to select folders if applicable.
          //.setMode(google.picker.DocsViewMode.GRID) //Display folders as a grid
          .setMimeTypes('{9a53e586-c360-412c-86ab-e30cfdb2d26d}'); //Set files that can be selected.

        let picker = new google.picker.PickerBuilder()
          .addView(docsView)
          .enableFeature(google.picker.Feature.NAV_HIDDEN)
          .hideTitleBar()
          .setSize(DIALOG_DIMENSIONS.width - 2, DIALOG_DIMENSIONS.height - 2) // -2 to create padding and preven