@Test
void importObjects() {

    when(httpClient.execute(argThat(request -> {
        assertThat(request.headers).containsEntry("kbn-xsrf", "true");
        assertThat(new String(request.body, StandardCharsets.UTF_8)).doesNotContain("${NOTIFICATION_BANNER}");
        return true;
    }))).thenReturn(new HTTPResponse(200, Map.of(), Strings.bytes("acknowledged")));
    service.importObjects();
}