public HttpResponseMessage clear() { string sessionId = Request.Headers.Authorization.Parameter; if (sessionId != null && dbObj.checkSession(ref sessionId)) { User user = UserBLL.getUser(sessionId); CartBLL.clearCart(user); return(Request.CreateResponse(HttpStatusCode.Accepted, UserBLL.getUser(sessionId))); } return(new HttpResponseMessage(HttpStatusCode.Unauthorized)); }