add_cookie
Description:
Adds cookie to this.
Emits the [signal@CookieJar:SoupCookieJar:changed] signal if we are modifying an existing cookie or adding a valid new cookie (
'valid' means that the cookie's expire date is not in the past).
cookie will be 'stolen' by the jar, so don't free it afterwards.
Parameters:
| this | |
| cookie |
a Cookie |