Stone.js API
    Preparing search index...
    cacheBlueprint: CacheBlueprint = ...

    Opt-in blueprint: import and register it to enable caching.

    It contributes the CacheServiceProvider, which binds cacheManager (the multi-store manager) and cache (the default store) into the container. Configure stores under stone.cache (or use the @Cache() decorator for a single store). stone.providers is an array, so this merges with the rest of the app.