ESSourceReader reader = new ESSourceReader(client, settings, indexName);
        reader.setScrollSize(1000);
        int count = 0;
        Set<String> valueSet = Collections.synchronizedSet(new HashSet<>());
        Map<String, Object> source;
        while ((source = reader.read()) != null) {
            assertTrue(source.get("field1").toString().startsWith("test"));

              numSuccessfulSetCalls.incrementAndGet();
            }
            awaitUnchecked(barrier);
            return null;
          }
        };
    Set<Object> finalResults = Collections.synchronizedSet(Sets.newIdentityHashSet());
    Runnable collectResultsRunnable =
        new Runnable() {
          @Override
          public void run() {
            try {

              numSuccessfulSetCalls.incrementAndGet();
            }
            awaitUnchecked(barrier);
            return null;
          }
        };
    Set<Object> finalResults = Collections.synchronizedSet(Sets.newIdentityHashSet());
    Runnable collectResultsRunnable =
        new Runnable() {
          @Override
          public void run() {
            try {

    protected Map<String, Supplier<String>> updateConfigListenerMap = new HashMap<>();

    /** A set of names of threads that are currently waiting. */
    protected Set<String> waitingThreadNames = Collections.synchronizedSet(new HashSet<>());

    /**
     * Initializes the SystemHelper.
     * This method sets up system properties, caches, and other initial configurations.
     */
    @PostConstruct
    public void init() {