serviceFreeze                             // Freeze all S3 API calls.
	serviceUnFreeze                           // Un-Freeze previously frozen S3 API calls.
	// Add new service requests here.
)

// Global service signal channel.
var globalServiceSignalCh = make(chan serviceSignal)

// GlobalContext context that is canceled when server is requested to shut down.

        return new String(buffer);
    }

    /**
     * Initializes the class.
     */
    protected static synchronized void initialize() {
        if (!initialized) {
            DisposableUtil.add(() -> {
                ResourceBundle.clearCache();
                initialized = false;
            });
            initialized = true;
        }
    }

      HashFunction first, HashFunction second, HashFunction... rest) {
    // We can't use Lists.asList() here because there's no hash->collect dependency
    List<HashFunction> list = new ArrayList<>();
    list.add(first);
    list.add(second);
    Collections.addAll(list, rest);
    return new ConcatenatedHashFunction(list.toArray(new HashFunction[0]));
  }

  /**

          oldHead = waitersField; // re-read and loop.
        } while (oldHead != Waiter.TOMBSTONE);
      }
      // re-read valueField, if we get here then we must have observed a TOMBSTONE while trying to
      // add a waiter.
      // requireNonNull is safe because valueField is always set before TOMBSTONE.
      return getDoneValue(requireNonNull(valueField));
    }

        Maps.<Service, Long, Duration>transformValues(startupTimes(), Duration::ofMillis));
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(ServiceManager.class)
        .add("services", Collections2.filter(services, not(instanceOf(NoOpService.class))))
        .toString();
  }

  /**
   * An encapsulation of all the mutable state of the {@link ServiceManager} that needs to be

    return collection != null && collection.remove(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean put(@ParametricNullness K key, @ParametricNullness V value) {
    return get(key).add(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {
    checkNotNull(values);
    // make sure we only call values.iterator() once

                    for (int i = 0; i < numExpanded; i++) {
                        final String en = readString(buffer, start + expandedNameOffset, len);
                        names.add(en);
                        expandedNameOffset += en.length() * 2 + 2;
                    }
                    this.expandedNames = names.toArray(new String[names.size()]);
                }

            }

    /**
     * Adds a client with a regular expression pattern at a specific position.
     * @param regex The regular expression to match URLs.
     * @param client The CrawlerClient instance.
     * @param pos The position to add the client.
     */
    public void addClient(final String regex, final CrawlerClient client, final int pos) {
        if (StringUtil.isBlank(regex)) {

    }

    public static class HpSpecification {
        protected List<String> columnList = new ArrayList<>();

        public void doColumn(String name) {
            columnList.add(name);
        }

        public void columnId() {
            doColumn("_id");
        }

        public void columnAccessType() {
            doColumn("accessType");
        }

    }

    public static class HpSpecification {
        protected List<String> columnList = new ArrayList<>();

        public void doColumn(String name) {
            columnList.add(name);
        }

        public void columnId() {
            doColumn("_id");
        }

        public void columnAvailable() {
            doColumn("available");
        }