} catch (NullPointerException e) {
            // Expected since we don't have a detector
        }
    }

    @Test
    public void test_updateDocument_emptyDoc() {
        Map<String, Object> doc = new HashMap<>();

        languageHelper.updateDocument(doc);

        // Should not add any language fields
        assertNull(doc.get("lang"));

Shinsuke Sugaya <******@****.***> 1773442886 +0900