* atomically switches aliases, then cleans up old and backup indices.
     *
     * @param loadBulkData    whether to load default bulk data after rebuilding (using OpType.CREATE to skip existing documents)
     * @param targetPrefixes  the set of index prefixes to rebuild (e.g., "fess_config", "fess_user", "fess_log")

The build of Gradle enables the configuration cache by default as a dogfooding experiment.

Most tasks that are used to build Gradle support the configuration cache, but some don't. For example, building the documentation currently requires you to disable the configuration cache.

To disable the configuration cache, run the build with `--no-configuration-cache`.

    // Attribute
    // =========

    /** Client for interacting with the search engine. */
    @Resource
    protected SearchEngineClient searchEngineClient;

    /** Helper for building and parsing search queries. */
    @Resource
    protected QueryHelper queryHelper;

    /** Helper for executing search operations. */
    @Resource
    protected SearchHelper searchHelper;