Retirving All files in Folder with Spreadsheet

This sample retrieves all files in a folder with spreadsheet. When there are some folders in the folder with spreadsheet, this script can retrieve all files in all folders. This script has to be a container-bound script for spreadsheet. Script : function getFileList(){ var folderlist = (function(folder, folderSt, results){ var ar = []; var folders = folder.getFolders(); while(folders.hasNext()) ar.push(; folderSt += folder.getId() + "#_aabbccddee_#"; var array_folderSt = folderSt.split("#_aabbccddee_#"); array_folderSt.pop() results.push(array_folderSt); ar.