set cookie (maybe for authentication) when using WebApiDriver

set-auth-cookie.php

    /**
     * @Given /^the authentication cookie has been set$/
     */
    public function theAuthenticationCookieHasBeenSet()
    {
        $authCookieName = 'connect.sid';
        $authCookie = $this->getSubContext('mink')->getSession()->getCookie($authCookieName);

        return new Step\When(sprintf("I set header \"Cookie\" with value \"connect.sid=%s\"", $authCookie));
    }