RestTemplate keycloak Admin API insecure

keycloakAdminApiInsecure.java

    @Bean
    public RestTemplate keycloakAdminApiInsecure() {
        try {
            TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;

            SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom()
                    .loadTrustMaterial(null, acceptingTrustStrategy)
                    .build();

            SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext);

            CloseableHttpClient httpClient = HttpClients.custom()
                    .setSSLSocketFactory(csf)
                    .build();

            HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();

            requestFactory.setHttpClient(httpClient);

            return new RestTemplateBuilder()
                    .rootUri(keycloakProperties.getAuthServerUrl())
                    .requestFactory(requestFactory)
                    .build();

        } catch (NoSuchAlgorithmException | KeyManagementException | KeyStoreException ex) {
            throw new RuntimeException(ex);
        }
    }