Webflux - Webclient - header 복수개 적용 방법

private HttpHeaders createHeaders() {
        HttpHeaders headers = new HttpHeaders();

        headers.add("X-Naver-Client-Id", clientId);
        headers.add("X-Naver-Client-Secret", clientSecret);

        return headers;
    }

    @Bean
    public WebClient kakaoWebClient() {

        return WebClient.builder()
                .baseUrl(baseurl)
                .defaultHeaders((headers -> {headers.addAll(createHeaders());}))
                .build();
    }
}