function sortByOrder(collection, iteratees, orders, guard) {
	      if (collection == null) {
	        return [];
	      }
	      if (guard && isIterateeCall(iteratees, orders, guard)) {
	        orders = undefined;
	      }
	      if (!isArray(iteratees)) {
	        iteratees = iteratees == null ? [] : [iteratees];
	      }
	      if (!isArray(orders)) {
	        orders = orders == null ? [] : [orders];
	      }
	      return baseSortByOrder(collection, iteratees, orders);
	    }
This method is like `_.sortByAll` except that it allows specifying the
sort orders of the iteratees to sort by. If `orders` is unspecified, all
values are sorted in ascending order. Otherwise, a value is sorted in
ascending order if its corresponding order is "asc", and descending if "desc".

If a property name is provided for an iteratee the created `_.property`
style callback returns the property value of the given element.

If an object is provided for an iteratee the created `_.matches` style
callback returns `true` for elements that have the properties of the given
object, else `false`.

@static
@memberOf _
@category Collection
@param {Array|Object|string} collection The collection to iterate over.
@param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
@param {boolean[]} [orders] The sort orders of `iteratees`.
@param- {Object} [guard] Enables use as a callback for functions like `_.reduce`.
@returns {Array} Returns the new sorted array.
@example

var users = [
  { 'user': 'fred',   'age': 48 },
  { 'user': 'barney', 'age': 34 },
  { 'user': 'fred',   'age': 42 },
  { 'user': 'barney', 'age': 36 }
];

// sort by `user` in ascending order and by `age` in descending order
_.map(_.sortByOrder(users, ['user', 'age'], ['asc', 'desc']), _.values);
// => [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]]