private long fetcher(Activity toFetch, TimeTracker fetchFrom) {
        return switch (toFetch) {
            case SEARCH -> fetchFrom.searchTime();
            case FILL -> fetchFrom.fillTime();
            case PING -> fetchFrom.pingTime();
        };
    }
A map used as a set to store the time track of all the Execution instances for a Result
container-search/src/main/java/com/yahoo/search/statistics/ElapsedTime.java