/** The key of the configuration. e.g. true */
    String LOGGING_SEARCH_DOCS_ENABLED = "logging.search.docs.enabled";

    /** The key of the configuration. e.g. filetype,created,click_count,title,doc_id,url,score,site,filename,host,digest,boost,mimetype,favorite_count,_id,lang,last_modified,content_length,timestamp */
    String LOGGING_SEARCH_DOCS_FIELDS = "logging.search.docs.fields";