*/
abstract class EndpointPairIterator<N> extends AbstractIterator<EndpointPair<N>> {
  private final BaseGraph<N> graph;
  private final Iterator<N> nodeIterator;

  @Nullable N node = null; // null is safe as an initial value because graphs don't allow null nodes

  Iterator<N> successorIterator = ImmutableSet.<N>of().iterator();

  static <N> EndpointPairIterator<N> of(BaseGraph<N> graph) {

        String msg = req.getHeader("Authorization");
        if (msg != null && msg.startsWith("NTLM ")) {
            final byte[] src = Base64.decode(msg.substring(5));
            if (src[8] == 1) {
                final Type1Message type1 = new Type1Message(src);
                final Type2Message type2 = new Type2Message(tc, type1, challenge, null);
                msg = new String(Base64.encode(type2.toByteArray()), "US-ASCII");

     */
    @Test
    void testReadDataWireFormat_withNullPipeIn() {
        mockPipe.pipeIn = null;
        byte[] buffer = new byte[10];
        int len = 10;
        int result = response.readDataWireFormat(buffer, 0, len);
        assertEquals(len, result, "readDataWireFormat should return the length when pipeIn is null.");
    }

    /**

[well-formed commit message]: https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html

#### Merging pull requests ####

Due to Guava's nature as a subset of Google's internal codebase which is
automatically synced to the public GitHub repository, we are unable to merge
pull requests directly into the master branch. Instead, once a pull request is
ready for merging, we'll make the appropriate changes in the internal codebase

     *
     * @param path
     *            The path to the properties file. If {@code null}, a {@link FileAccessException} is thrown.
     * @throws FileAccessException
     *             If the file cannot be accessed or created.
     */
    public DynamicProperties(final String path) {
        this(path == null ? null : new File(path));
    }

    /**

      when (val protocol = sslSocket.applicationProtocol) {
        null, "" -> null
        else -> protocol
      }
    } catch (e: UnsupportedOperationException) {
      // https://docs.oracle.com/javase/9/docs/api/javax/net/ssl/SSLSocket.html#getApplicationProtocol--
      null
    }

  @SuppressLint("NewApi")
  override fun configureTlsExtensions(
    sslSocket: SSLSocket,

     *            The algorithm. Must not be {@literal null} or an empty string.
     * @param text
     *            The string to be hashed.
     * @return The hashed string.
     */
    public static String digest(final String algorithm, final String text) {
        assertArgumentNotEmpty("algorithm", algorithm);

        if (text == null) {
            return null;
        }

            lhaExtractor.setMaxContentSize(100);
            lhaExtractor.getText(in, null);
            fail();
        } catch (MaxLengthExceededException e) {
            // pass
        }
        lhaExtractor.setMaxContentSize(-1);
    }

    public void test_getText_null() {
        try {
            lhaExtractor.getText(null, null);
            fail();
        } catch (final CrawlerSystemException e) {

        return profile.getActivation() != null && profile.getActivation().getProperty() != null;
    }

    @Override
    public boolean isActive(Profile profile) throws ProfileActivationException {
        Activation activation = profile.getActivation();

        ActivationProperty property = activation.getProperty();

        if (property != null) {
            String name = property.getName();

    assertTrue(multimap().remove(getKeyForNullValue(), null));

    expectMissing(mapEntry(getKeyForNullValue(), (V) null));
    assertGet(getKeyForNullValue(), ImmutableList.<V>of());
  }

  @MapFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_KEY_QUERIES})
  public void testRemoveNullKeyAbsent() {
    assertFalse(multimap().remove(null, v0()));
    expectUnchanged();
  }