@Test
public void multiSearchHasCorrectContentType() throws JSONException {

    Search search = new Search.Builder("").build();
    MultiSearch multiSearch = new MultiSearch.Builder(search).build();
    assertEquals("POST", multiSearch.getRestMethodName());
    assertEquals("/_msearch", multiSearch.getURI(ElasticsearchVersion.UNKNOWN));
    assertEquals("application/x-ndjson", multiSearch.getHeader("Content-Type"));
}