the :class:`CookieJar`'s :class:`CookiePolicy` instance are true and false
respectively), the :mailheader:`Cookie2` header is also added when appropriate.
- The *request* object (usually a :class:`urllib.request..Request` instance)
+ The *request* object (usually a :class:`urllib.request.Request` instance)
must support the methods :meth:`get_full_url`, :meth:`get_host`,
:meth:`get_type`, :meth:`unverifiable`, :meth:`has_header`,
:meth:`get_header`, :meth:`header_items`, :meth:`add_unredirected_header`