code: function _returnMap(callback, file, created){
    if(typeof file === 'string'){
      var map = foldermap.mapSync(file);
      Object.defineProperty(map, '_created', {value:created});
    } else {
      var map = {};
      for(var i in file){
        map[i] = foldermap.mapSync(file[i]);
        Object.defineProperty(map[i], '_created', {value:created});
      }
    }
    callback(null, map);
  }
docs: Function for returning foldermap.map object to callback
  
  @param {Function} callback function to call with result
  @param {String|String[]} file string or object or array containing files to map
  @param {Boolean} [created=false] Whether to mark objects as created