PersistedToolchains pt = new PersistedToolchains();
        merger.merge(pt, null, null);
        merger.merge(null, pt, null);
    }

    @Test
    void testMergeJdk() throws Exception {
        try (InputStream isDominant = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");

        assertArgumentNotNull("channel", channel);
        assertArgumentNotNull("mode", mode);

        try {
            return channel.map(mode, 0, channel.size());
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Returns the size of the file.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.

        return inputDir;
    }

    @OutputDirectory
    public DirectoryProperty getOutputDir() {
        return outputDir;
    }

    @TaskAction
    public void adapt() throws IOException {

        for (String classFile : classFiles) {
            adjustClass(classFile, classNode -> {
                classNode.access &= ~ACC_PRIVATE;
                classNode.access |= ACC_PUBLIC;

    }

    protected ArtifactRepository getLocalRepository() throws Exception {
        File repoDir = new File(getBasedir(), "target/local-repo").getAbsoluteFile();

        return repositorySystem.createLocalRepository(repoDir);
    }

    @Test
    void testThatASystemScopedDependencyIsNotResolvedFromRepositories() throws Exception {
        //

        try {
            final URLConnection connection = url.openConnection();
            connection.setUseCaches(false);
            return connection.getInputStream();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Returns a {@link URLConnection} object that represents a connection to the remote object referred to by the URL.
     *
     * @param url

    private int expiredCount;

    protected void setUp() throws Exception {
        expiredCount = 0;
        TimeoutManager.getInstance().clear();
    }

    protected void tearDown() throws Exception {
        TimeoutManager.getInstance().clear();
    }

    /**
     * @throws Exception
     */
    public void testExpired() throws Exception {

        long decodedValue = SMBUtil.readInt8(buffer, offset);
        assertEquals(endOfFile, decodedValue);
    }

    @Test
    @DisplayName("Test decode method with valid buffer")
    void testDecode() throws SMBProtocolDecodingException {
        // Prepare buffer with known value
        long expectedValue = 0x0123456789ABCDEFL;
        byte[] buffer = new byte[16];
        SMBUtil.writeInt8(expectedValue, buffer, 0);

  }

  @Override
  Collection<V> createValues() {
    return new FilteredMultimapValues<>(this);
  }

  @Override
  Iterator<Entry<K, V>> entryIterator() {
    throw new AssertionError("should never be called");
  }

  @Override
  Map<K, Collection<V>> createAsMap() {
    return new AsMap();
  }

  @Override
  Set<K> createKeySet() {

  }

  @Override
  public OutputStream openStream() throws IOException {
    outputStreamOpened = true;
    bytes.reset(); // truncate
    return new Out();
  }

  private final class Out extends TestOutputStream {

    Out() throws IOException {
      super(bytes, options);
    }

    @Override
    public void close() throws IOException {
      outputStreamClosed = true;
      super.close();
    }

    String LOCAL_REPOSITORY_ID = "local";

    @Deprecated
    ArtifactRepositoryLayout getLayout(String layoutId) throws UnknownRepositoryLayoutException;

    @Deprecated
    ArtifactRepository createDeploymentArtifactRepository(String id, String url, String layoutId, boolean uniqueVersion)
            throws UnknownRepositoryLayoutException;

    ArtifactRepository createDeploymentArtifactRepository(