*  **OkHttp now offers interceptors.** Interceptors are a powerful mechanism
    that can monitor, rewrite, and retry calls. The [interceptors doc][interceptors] is a full
    introduction to this new API.

 *  New: APIs to iterate and selectively clear the response cache.
 *  New: Support for SOCKS proxies.
 *  New: Support for `TLS_FALLBACK_SCSV`.
 *  New: Update HTTP/2 support to `h2-16` and `hpack-10`.

      ArrayList<LockGraphNode> acquiredLockList = requireNonNull(acquiredLocks.get());
      LockGraphNode node = lock.getLockGraphNode();
      // Iterate in reverse because locks are usually locked/unlocked in a
      // LIFO order.
      for (int i = acquiredLockList.size() - 1; i >= 0; i--) {
        if (acquiredLockList.get(i) == node) {

         * of the array becomes null only when we iterate past it and then clear it.
         */
        I result = requireNonNull(elements[index]);
        elements[index] = null;
        index++;
        return result;
      }
    };
  }

  /**
   * Combines two iterators into a single iterator. The returned iterator iterates across the

    List<Integer> collection =
        new ArrayList<Integer>(nums) {
          @Override
          public Iterator<Integer> iterator() {
            throw new AssertionFailedError("Don't iterate me!");
          }
        };
    assertEquals(5, Iterables.size(collection));
  }

  private static <T extends @Nullable Object> Iterable<T> iterable(T... elements) {
    List<T> list = asList(elements);

	// initialize a new mux router.
	// goriilla/mux is the library used to register all the routes and handle them.
	muxRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()
	if len(apiFunctions) > 0 {
		// Iterate the list of API functions requested for and register them in mux HTTP handler.
		registerAPIFunctions(muxRouter, objLayer, apiFunctions...)
		muxRouter.Use(globalMiddlewares...)
		return muxRouter
	}

// Returns the operation in the graph with `oper_name`. Returns nullptr if
// no operation found.
TF_CAPI_EXPORT extern TF_Operation* TF_GraphOperationByName(
    TF_Graph* graph, const char* oper_name);

// Iterate through the operations of a graph.  To use:
// size_t pos = 0;
// TF_Operation* oper;
// while ((oper = TF_GraphNextOperation(graph, &pos)) != nullptr) {
//   DoSomethingWithOperation(oper);
// }

   * for any given call to {@code cache.get} or {@code cache.getUnchecked} is the value returned, or
   * the exception thrown.
   *
   * <p>As we iterate from {@code 0} to {@code nThreads}, threads with an even index will call
   * {@code getUnchecked}, and threads with an odd index will call {@code get}. If the cache throws

				}
			}
		}(index, disk)
	}
	wg.Wait()

	// Reduce errors for each object
	for objIndex := range objects {
		diskErrs := make([]error, len(storageDisks))
		// Iterate over disks to fetch the error
		// of deleting of the current object
		for i := range delObjErrs {
			// delObjErrs[i] is not nil when disks[i] is also not nil
			if delObjErrs[i] != nil {

			dObjectsByPool[i], dErrsByPool[i] = pool.DeleteObjects(ctx, bucket, objects, opts)
			return nil
		}, i)
	}
	eg.Wait() // wait to check all the pools.

	for i := range dobjects {
		// Iterate over pools
		for pool := range z.serverPools {
			if dErrsByPool[pool][i] == nil && dObjectsByPool[pool][i].found {
				// A fast exit when the object is found and removed
				dobjects[i] = dObjectsByPool[pool][i]

	if globalSiteReplicationSys.isEnabled() {
		secretKey, err := getTokenSigningKey()
		if err != nil {
			return nil, err
		}
		keys = append(keys, secretKey)
	}

	// Iterate over all keys and return with the first successful claim extraction
	for _, key := range keys {
		jwtClaims, err = getClaimsFromTokenWithSecret(u.Credentials.SessionToken, key)
		if err == nil {
			break
		}