_setSessionCookie(req, res, value) {
        if (!value) {
            return this._removeSessionCookie(req, res);
        }
        const cookies = this._getCookies(req, res);
        cookies.set(this.sessionCookieName, value, this.sessionCookieOptions);
    }
@method _setSessionCookie

@param {Request} req
@param {Response} res
@param {string} value