public static String getQPConfig(Query query,
                                     String rewriterName,
                                     String paramName) {
        log(utilsLogger, query, "Retrieving config parameter value of: " +
            rewriterName + "." + paramName);

        return getUserParam(query, rewriterName + "." + paramName);
    }
Get config parameter value set in query profile

@param query Query object from the searcher
@param rewriterName Name of the rewriter
@param paramName parameter to be retrieved
@return parameter value or null if not found
container-search/src/main/java/com/yahoo/search/query/rewrite/RewriterUtils.java