synchronized (result) {
                    result.addMissingArtifact(artifact);
                }
            } catch (ArtifactResolutionException e) {
                // This is really a wagon TransferFailedException so something went wrong after we successfully
                // retrieved the metadata.

                synchronized (result) {

        final int[] callCount = { 0 };

        SearchLogHelper mockSearchLogHelper = new SearchLogHelper() {
            @Override
            public void storeSearchLog() {
                synchronized (lock) {
                    callCount[0]++;
                    if (callCount[0] % 2 == 0) {
                        throw new RuntimeException("Even call error");
                    }

                    // be explicitly safe here to avoid interleaving output from multiple test suites
                    synchronized (this) {
                        // make sure we've flushed everything to disk before reading
                        eventWriter.flush();

                        System.err.println("\n\nSuite: " + suite);

     */
    @Override
    public void refresh() throws CIFSException {
        log.debug("Refreshing JAAS credentials");
        this.cachedSubject = null;
    }

    @Override
    public synchronized Subject getSubject() {
        if (this.cachedSubject != null) {
            return this.cachedSubject;
        }

        try {
            log.debug("Logging on");
            LoginContext lc;

                            List<Map<String, Object>> results =
                                    processor.search("*", new TestSearchRequestParams(0, 10, 0), OptionalThing.empty());
                            synchronized (allResults) {
                                allResults.add(results);
                            }
                        } catch (InterruptedException e) {

            this.fp = 0L;
        } catch (final CIFSException e) {
            throw SmbException.wrap(e);
        }
    }

    /**
     * @return
     * @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        // ensure file is open
        if (this.handle == null || !this.handle.isValid()) {
            // one extra acquire to keep this open till the stream is released

    }

    @Test
    public void test_evaluate_concurrency() {
        queryRescorer = new QueryRescorer() {
            private int callCount = 0;

            @Override
            public synchronized RescorerBuilder<?> evaluate(Map<String, Object> params) {
                callCount++;
                if (callCount % 2 == 0) {
                    return createMockRescorerBuilder();
                }

  }

  private static class TestApplication extends Application {
    private final List<Thread> hooks = new ArrayList<>();

    @Override
    synchronized void addShutdownHook(Thread hook) {
      hooks.add(hook);
    }

    synchronized void shutdown() throws InterruptedException {
      for (Thread hook : hooks) {
        hook.start();
      }
      for (Thread hook : hooks) {
        hook.join();

            this.epoch = 1;
            this.breaking = false;
        }
        
        public synchronized void updateState(int newState) {
            this.leaseState = newState;
            this.lastAccessTime = System.currentTimeMillis();
        }
        
        public synchronized void incrementEpoch() {
            this.epoch++;
        }
        
        public boolean hasReadCache() {

  }

  static class DecoupledClassLoader extends URLClassLoader {

    public DecoupledClassLoader(URL[] urls) {
      super(urls);
    }

    @Override
    protected synchronized Class<?> loadClass(String name, boolean resolve)
        throws ClassNotFoundException {
      // Force Finalizer to load from this class loader, not its parent.
      if (name.equals(Finalizer.class.getName())) {