It encapsulates a number of features and functionality for generating HTTP responses in your application.
It also assists in testing, as it can be mocked/stubbed allowing you to inspect headers that will be sent.
The second parameter of this method is used to specify a Cache validation in HTTP is often used when content is constantly changing, and asks the application to only generate the response contents if the cache is no longer fresh.
To take advantage of shared caches, the control directive must be set as public.
Implementation for Pages with Forms There are a few different use cases for the CSRF module.