code: public HttpSession getSession(boolean arg0) {
  		final HttpSession httpSession = request.getSession(arg0);
  		if (httpSession == null) {
  			return null;
  		}
  		else {
  			return new HttpSessionWrapper(httpSession);
  		}
  	}
docs: /*
  (non-Javadoc)
  @see javax.servlet.http.HttpServletRequest#getSession(boolean)