* @return true if the index was created successfully, false otherwise
     */
    public boolean createIndex(final String index, final String indexName) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return createIndex(index, indexName, fessConfig.getIndexNumberOfShards(), fessConfig.getIndexAutoExpandReplicas(), true);
    }

    /**

        final String toIndex = docIndex + "." + new SimpleDateFormat(Constants.DOCUMENT_INDEX_SUFFIX_PATTERN).format(new Date());
        if (searchEngineClient.createIndex(docIndex, toIndex, numberOfShards, autoExpandReplicas, resetDictionaries)) {
            searchEngineClient.admin().cluster().prepareHealth(toIndex).setWaitForYellowStatus().execute(ActionListener.wrap(response -> {

	DB.AutoMigrate(&IndexStruct{})

	if err := DB.Migrator().DropIndex(&IndexStruct{}, "Name"); err != nil {
		t.Fatalf("Failed to drop index for user's name, got err %v", err)
	}

	if err := DB.Migrator().CreateIndex(&IndexStruct{}, "Name"); err != nil {
		t.Fatalf("Got error when tried to create index: %+v", err)
	}

	if !DB.Migrator().HasIndex(&IndexStruct{}, "Name") {
		t.Fatalf("Failed to find index for user's name")
	}