#http\Cookie http\Cookie::addExtra(string $extra_name, string $extra_value)

Add an extra attribute to the cookie list. See http\Cookie::setExtra().

Params:#

• string $extra_name#
  The key of the extra attribute.
• string $extra_value#
  The value of the extra attribute.

Returns:#

• http\Cookie, self.

Throws:#

• http\Exception\InvalidArgumentException