private MultiValueMap<String, HttpCookie> getCookies(final ServerHttpRequest request, final RequestHandle requestHandle) {
        RequestHandle.ShenyuCookie shenyuCookie = requestHandle.getCookie();
        MultiValueMap<String, HttpCookie> cookies = new LinkedMultiValueMap<>(request.getCookies());
        if (Objects.isNull(shenyuCookie)) {
            return cookies;
        }
        if (MapUtils.isNotEmpty(shenyuCookie.getAddCookies())) {
            shenyuCookie.getAddCookies().entrySet().forEach(s -> this.fillCookie(s, cookies));
        }
        if (MapUtils.isNotEmpty(shenyuCookie.getSetCookies())) {
            shenyuCookie.getSetCookies().entrySet().forEach(s -> this.fillCookie(s, cookies));
        }
        if (MapUtils.isNotEmpty(shenyuCookie.getReplaceCookieKeys())) {
            shenyuCookie.getReplaceCookieKeys().entrySet().forEach(s -> this.replaceCookieKey(s, cookies));
        }
        if (CollectionUtils.isNotEmpty(shenyuCookie.getRemoveCookieKeys())) {
            shenyuCookie.getRemoveCookieKeys().forEach(cookies::remove);
        }
        return cookies;
    }
get cookies.

@param request serverHttpRequest
@param requestHandle requestHandle
@return new cookies
shenyu-plugin/shenyu-plugin-request/src/main/java/org/apache/shenyu/plugin/request/RequestPlugin.java