code: function (arg) {
                  var value  = arg.value;
                  var flag   = arg.flag;
                  var result = null;
  
                  if (value) {
                      value  = Array.isArray(value) ? value : [value];
                      result = [];
  
                      value.forEach(function (path) {
                          result.push(flag);
                          result.push(path);
                      });
                  }
  
                  return result;
              }
docs: "exclude" option could be used multiple times in this case the values are provided in an array