.then()
                .statusCode(200)
                .body("record_count", greaterThanOrEqualTo(0))
                .body("data", notNullValue());
    }

    @Test
    public void testPopularWords_withField() {
        Map<String, String> params = new HashMap<>();
        params.put("field", "content");

        given().contentType("application/json")
                .params(params)
                .when()