cakephp/cakephp — comment on commit d238d8c0bbf51580bdb5dbd86c912c5b85bdbe0d
File: lib/Cake/View/View.php line 799
By ceeram:

https://github.com/cakephp/cakephp/blob/2.1/lib/Cake/Network/CakeRequest.php#L37 it should have null value by default, thats why i changed the return value as well, its more consistent to return null as well instead of empty string