* The flag to reset dictionaries.
     */
    @Size(max = 10)
    public String resetDictionaries;

    /**
     * The number of shards for doc.
     */
    @Size(max = 10)
    public String numberOfShardsForDoc = ComponentUtil.getFessConfig().getIndexNumberOfShards();

    /**
     * The auto expand replicas for doc.
     */
    @Size(max = 10)