registry.register(o1);

    Iterator<Subscriber> three = registry.getSubscribers("");
    assertEquals(s1, one.next().target);
    assertFalse(one.hasNext());

    assertEquals(s1, three.next().target);
    assertEquals(s2, three.next().target);
    assertEquals(o1, three.next().target);
    assertFalse(three.hasNext());

    three = registry.getSubscribers("");

    registry.unregister(s2);

    } catch (InterruptedException e) {
      currentThread().interrupt();
      throw newWithCause(exceptionClass, e);
    } catch (TimeoutException e) {
      throw newWithCause(exceptionClass, e);
    } catch (ExecutionException e) {
      wrapAndThrowExceptionOrError(e.getCause(), exceptionClass);
      throw new AssertionError();
    }
  }

  @VisibleForTesting
  interface GetCheckedTypeValidator {

        final String p = loc.getURL().getPath();
        if (p.lastIndexOf('/') != p.length() - 1) {
            throw new SmbException(loc.getURL() + " directory must end with '/'");
        }
        if (unc.lastIndexOf('\\') != unc.length() - 1) {
            throw new SmbException(unc + " UNC must end with '\\'");
        }

        final SmbTreeHandleImpl th = getTreeHandle();

   * types your try block can throw when calling an overload of this method so as to avoid losing
   * the original exception type.
   *
   * <p>This method always throws, and as such should be called as {@code throw closer.rethrow(e);}
   * to ensure the compiler knows that it will throw.
   *
   * @return this method does not return; it always throws

        "Map.merge(absent, value, function) should return value",
        v3(),
        getMap()
            .merge(
                k3(),
                v3(),
                (oldV, newV) -> {
                  throw new AssertionFailedError(
                      "Should not call merge function if key was absent");
                }));
    expectAdded(e3());
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})

     */
    @SuppressWarnings("unchecked")
    public <T extends Decodable> T getInfo(final Class<T> clazz) throws CIFSException {
        if (!clazz.isAssignableFrom(this.info.getClass())) {
            throw new CIFSException("Incompatible file information class");
        }
        return (T) getInfo();
    }

    /**
     * {@inheritDoc}
     *

     * @throws CurlException if the method is called after the param method
     */
    public CurlRequest encoding(final String encoding) {
        if (paramList != null) {
            throw new CurlException("This method must be called before param method.");
        }
        this.encoding = encoding;
        return this;
    }

    /**
     * Sets the threshold size for the request body.

    if (canceled) {
      throw IOException("canceled")
    }

    rawSocket.soTimeout = socketReadTimeoutMillis
    try {
      Platform.get().connectSocket(rawSocket, route.socketAddress, socketConnectTimeoutMillis)
    } catch (e: ConnectException) {
      throw ConnectException("Failed to connect to ${route.socketAddress}").apply {
        initCause(e)
      }

     */
    @PostConstruct
    public void init() {
        if (officeManager == null) {
            throw new CrawlerSystemException("officeManager is null.");
        }
        try {
            officeManager.start();
        } catch (final OfficeException e) {
            throw new CrawlerSystemException("Failed to start officeManager.", e);
        }
        if (logger.isDebugEnabled()) {

    public ScriptEngine getScriptEngine(final String name) {
        if (name == null) {
            throw new ScriptEngineException("script name is null.");
        }
        final ScriptEngine scriptEngine = scriptEngineMap.get(name.toLowerCase(Locale.ROOT));
        if (scriptEngine != null) {
            return scriptEngine;
        }
        throw new ScriptEngineException(name + " is not found.");
    }