NullPointerException.class, () -> new UrlSource(null), "Should fail, since you must specify a url");
        assertEquals("url cannot be null", e.getMessage());
    }

    @Test
    void testGetInputStream() throws Exception {
        URL txtFile = new File("target/test-classes/source.txt").toURI().toURL();
        UrlSource source = new UrlSource(txtFile);
        try (InputStream is = source.getInputStream();

    ProxyInfo getProxy(String protocol);

    void getArtifact(Artifact artifact, ArtifactRepository repository)
            throws TransferFailedException, ResourceDoesNotExistException;

    void getArtifact(Artifact artifact, List<ArtifactRepository> remoteRepositories)
            throws TransferFailedException, ResourceDoesNotExistException;

    ArtifactRepository getMirrorRepository(ArtifactRepository repository);

                  throws Throwable {
                throw exception;
              }
            });
    T wrapper = wrapperFunction.apply(proxy);
    try {
      method.invoke(wrapper, getParameterValues(method));
      fail(method + " failed to throw exception as is.");
    } catch (InvocationTargetException e) {
      if (exception != e.getCause()) {

   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link
   * Double#NEGATIVE_INFINITY}, or {@link Double#NaN}) then the result is {@link Double#NaN}.
   *
   * @throws IllegalStateException if the dataset is empty
   */
  public double populationCovariance() {
    checkState(count() != 0);
    return sumOfProductsOfDeltas / count();
  }

  /**

    }

    return new FilteredCollection<>(checkNotNull(unfiltered), checkNotNull(predicate));
  }

  /**
   * Delegates to {@link Collection#contains}. Returns {@code false} if the {@code contains} method
   * throws a {@code ClassCastException} or {@code NullPointerException}.
   */
  static boolean safeContains(Collection<?> collection, @CheckForNull Object object) {
    checkNotNull(collection);
    try {

            @Override
            public int read(char[] cbuf, int off, int len) throws IOException {
                if (delegate == null) {
                    delegate = transform(original);
                }
                return delegate.read(cbuf, off, len);
            }

            @Override
            public void close() throws IOException {
                if (delegate != null) {
                    delegate.close();

    } catch (IllegalAccessException | ClassNotFoundException | NoSuchMethodException e) {
      throw new RuntimeException("Couldn't invoke ThreadManager.currentRequestThreadFactory", e);
    } catch (InvocationTargetException e) {
      throwIfUnchecked(e.getCause());
      // This should be impossible: `currentRequestThreadFactory` has no `throws` clause.
      throw new UndeclaredThrowableException(e.getCause());
    }
  }

  @J2ktIncompatible

  protected CharEscaper() {}

  /**
   * Returns the escaped form of a given literal string.
   *
   * @param string the literal string to be escaped
   * @return the escaped form of {@code string}
   * @throws NullPointerException if {@code string} is null
   */
  @Override
  public String escape(String string) {
    checkNotNull(string); // GWT specific check (do not optimize)

        this.settingsBuilder = settingsBuilder;
        this.settingsDecrypter = settingsDecrypter;
    }

    @Override
    public void process(CliRequest cliRequest) throws Exception {
        CommandLine commandLine = cliRequest.getCommandLine();
        String workingDirectory = cliRequest.getWorkingDirectory();
        MavenExecutionRequest request = cliRequest.getRequest();

    assertEquals(
        "Exception while executing callback: MyListener custom-label",
        logHandler.getStoredLogRecords().get(0).getMessage());
  }

  public void testEnqueueAndDispatch_multithreaded() throws InterruptedException {
    Object listener = new Object();
    ExecutorService service = Executors.newFixedThreadPool(4);
    ListenerCallQueue<Object> queue = new ListenerCallQueue<>();
    try {