Jar::register()
Method: Register the cookie handler with the request’s hooking system
Source: wp-includes/Requests/src/Cookie/Jar.php:132
Jar::before_request()
Method: Add Cookie header to a request if we have any
Source: wp-includes/Requests/src/Cookie/Jar.php:148
Jar
Class: Cookie holder object
Source: wp-includes/Requests/src/Cookie/Jar.php:26
Jar::__construct()
Method: Create a new jar
Source: wp-includes/Requests/src/Cookie/Jar.php:41