* @return The SuggestIndexResponse
     */
    public SuggestIndexResponse indexFromDocument(final String index, final Map<String, Object>[] documents, final String[] supportedFields,
            final String[] tagFieldNames, final String roleFieldName, final String langFieldName, final String[] badWords) {
        return indexFromDocument(new ContentIndexingContext(index, supportedFields, tagFieldNames, roleFieldName, langFieldName, badWords),

        String field = settings.array().get(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS)[0];

        Map<String, Object> document = new HashMap<>();
        document.put(field, "この柿は美味しい。");
        suggester.indexer().indexFromDocument(new Map[] { document });
        suggester.refresh();

        SuggestResponse response1 = suggester.suggest().setQuery("かき").setSuggestDetail(true).execute().getResponse();
        assertEquals(1, response1.getNum());

    @SuppressWarnings("unchecked")
    public void test_indexFromEmptyDocuments() throws Exception {
        Map<String, Object>[] documents = new Map[0];
        SuggestIndexResponse response = suggester.indexer().indexFromDocument(documents);

        assertNotNull(response);
        assertEquals(0, response.getNumberOfInputDocs());
        assertFalse(response.hasError());
    }

    @Test

     * @param documents The documents to index.
     * @return The SuggestIndexResponse.
     */
    public SuggestIndexResponse indexFromDocument(final Map<String, Object>[] documents) {
        ensureOperations();
        return contentOps.indexFromDocument(createContext(), documents);
    }

    /**
     * Indexes documents from a DocumentReader asynchronously.

DocumentReader reader = new ESSourceReader(
    client,
    suggester.settings(),
    "content-index",        // source index
    "document"             // document type
);

suggester.indexer()
    .indexFromDocument(reader, 2, 100)  // threads=2, batch=100
    .getResponse();
```

### Index from Query Logs

```java
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;

        documents[0].put(field, "これはテストです");

        documents[1] = new HashMap<>();
        documents[1].put(field, "検索エンジン");

        SuggestIndexResponse response = suggester.indexer().indexFromDocument(documents);

        assertNotNull(response);
        assertEquals(2, response.getNumberOfInputDocs());
        assertFalse(response.hasError());
    }

    @Test

        final int docPerReq = fessConfig.getSuggestUpdateDocPerRequestAsInteger();
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        suggester.indexer().indexFromDocument(() -> {
            final ESSourceReader reader = new ESSourceReader(ComponentUtil.getSearchEngineClient(), suggester.settings(),
                    fessConfig.getIndexDocumentSearchIndex());