code: def return_ok(self, cookie, request):
          
          # Path has already been checked by .path_return_ok(), and domain
          # blocking done by .domain_return_ok().
          _debug(" - checking cookie %s=%s", cookie.name, cookie.value)
  
          for n in "version", "verifiability", "secure", "expires", "port", "domain":
              fn_name = "return_ok_"+n
              fn = getattr(self, fn_name)
              if not fn(cookie, request):
                  return False
          return True
docs: If you override .return_ok(), be sure to call this method.  If it
          returns false, so should your subclass (assuming your subclass wants to
          be more strict about which cookies to return).