private void parse ( byte[] material ) throws IOException {
        int pos = 0;
        for ( int i = 0; i < 8; i++ ) {
            if ( material[ i ] != NTLMSSP_SIGNATURE[ i ] ) {
                throw new IOException("Not an NTLMSSP message.");
            }
        }
        pos += 8;

        if ( readULong(material, pos) != NTLMSSP_TYPE1 ) {
            throw new IOException("Not a Type 1 message.");
        }

 */
@Deprecated
public interface ArtifactMetadataSource {

    ResolutionGroup retrieve(MetadataResolutionRequest request) throws ArtifactMetadataRetrievalException;

    ResolutionGroup retrieve(
            Artifact artifact, ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories)
            throws ArtifactMetadataRetrievalException;

    /**
     * Get a list of available versions for an artifact in the remote repository

   * independent stream each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned stream is closed.
   *
   * @throws IOException if an I/O error occurs while opening the stream
   */
  public abstract OutputStream openStream() throws IOException;

  /**
   * Opens a new buffered {@link OutputStream} for writing to this sink. The returned stream is not

     * @param passwordHash
     * @param serverChallenge
     * @param clientChallenge
     * @return the calculated response
     * @throws GeneralSecurityException
     */
    public static byte[] getNTLM2Response ( byte[] passwordHash, byte[] serverChallenge, byte[] clientChallenge ) throws GeneralSecurityException {
        byte[] sessionHash = new byte[8];

        MessageDigest md5 = Crypto.getMD5();;

    public void tearDown() throws IOException {}
  }

  private static class EmptyCharSourceFactory implements CharSourceFactory {

    @Override
    public CharSource createSource(String data) throws IOException {
      return CharSource.empty();
    }

    @Override
    public String getExpected(String data) {
      return "";
    }

    @Override
    public void tearDown() throws IOException {}
  }

   *
   * @param cbuf the character buffer to process
   * @param off the offset into the buffer
   * @param len the number of characters to process
   * @throws IOException if an I/O error occurs
   * @see #finish
   */
  protected void add(char[] cbuf, int off, int len) throws IOException {
    int pos = off;
    if (sawReturn && len > 0) {
      // Last call to add ended with a CR; we can handle the line now.

   *
   * @param cbuf the character buffer to process
   * @param off the offset into the buffer
   * @param len the number of characters to process
   * @throws IOException if an I/O error occurs
   * @see #finish
   */
  protected void add(char[] cbuf, int off, int len) throws IOException {
    int pos = off;
    if (sawReturn && len > 0) {
      // Last call to add ended with a CR; we can handle the line now.

        }

        try {
            // last chance - classic model
            return Class.forName(name);
        } catch (final Exception e) {
            throw new TypeNotPresentException(name, e);
        } catch (final LinkageError e) {
            throw new TypeNotPresentException(name, e);
        }
    }

    /**
     * Creates an instance of the given implementation using the default constructor.
     *

   *
   * <p><b>Java 8+ users:</b> use {@link Long#parseUnsignedLong(String)} instead.
   *
   * @throws NumberFormatException if the string does not contain a valid unsigned {@code long}
   *     value
   * @throws NullPointerException if {@code string} is null (in contrast to {@link
   *     Long#parseLong(String)})
   */
  @CanIgnoreReturnValue

        this.repoSystem = repoSystem;
    }

    public List<CoreExtensionEntry> loadCoreExtensions(
            MavenExecutionRequest request, Set<String> providedArtifacts, List<CoreExtension> extensions)
            throws Exception {
        try (CloseableSession repoSession = repositorySystemSessionFactory
                .newRepositorySessionBuilder(request)