* It uses Log4j2 for logging.
 *
 * <p>
 * The class contains methods for logging different types of events, such as:
 * </p>
 * <ul>
 *   <li>Starting and finishing threads</li>
 *   <li>Starting and cleaning up crawling</li>
 *   <li>Handling unsupported URLs</li>
 *   <li>Checking last modified dates</li>
 *   <li>Getting content</li>
 *   <li>Handling redirects</li>

    }

    int type, length;

    /**
     * Writes the packet to the specified byte array in wire format.
     *
     * @param dst the destination byte array to write to
     * @param dstIndex the starting index in the destination array
     * @return written bytes
     */
    public int writeWireFormat(final byte[] dst, final int dstIndex) {
        this.length = writeTrailerWireFormat(dst, dstIndex + HEADER_LENGTH);

     */
    public ObjectBasedValueSource(Object root) {
        super(true);
        this.root = root;
    }

    /**
     * <p>Split the expression into parts, tokenized on the dot ('.') character. Then,
     * starting at the root object contained in this value source, apply each part
     * to the object graph below this root, using either 'getXXX()' or 'isXXX()'
     * accessor types to resolve the value for each successive expression part.

    /**
     *    MD4 basic transformation.
     *    <p>
     *    Transforms context based on 512 bits from input block starting
     *    from the offset'th byte.
     *
     *    @param    block    input sub-array.
     *    @param    offset    starting position of sub-array.
     */
    private void transform(final byte[] block, int offset) {

        java.util.Map<CrawlerStatus, String> statusMap = new java.util.HashMap<>();

        // Add entries
        statusMap.put(CrawlerStatus.INITIALIZING, "Starting up");
        statusMap.put(CrawlerStatus.RUNNING, "In progress");
        statusMap.put(CrawlerStatus.DONE, "Completed");

        // Verify entries
        assertEquals(3, statusMap.size());
        assertEquals("Starting up", statusMap.get(CrawlerStatus.INITIALIZING));

            Other values define only the prefix of classes/resources being exposed. Their binary name must be equal to the prefix or starting with the prefix (followed by "." or "$").
            In particular this includes all subpackages. Despite the element name one can also only expose individual classes of a particular package by adding its binary name as value.

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:solid">main.py</u>

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting development server 🚀

             Searching for package file structure from directories with
             <font color="#3465A4">__init__.py</font> files

        assertEquals(expected, written);
    }

    // Helper method to extract string from buffer
    private String extractStringFromBuffer(byte[] buffer, int offset, int maxLen) {
        int end = offset;
        while (end < offset + maxLen && buffer[end] != 0) {
            end++;
        }
        return new String(buffer, offset, end - offset, StandardCharsets.UTF_8);
    }

  protected abstract void update(byte b);

  /** Updates this hasher with the given bytes. */
  protected void update(byte[] b) {
    update(b, 0, b.length);
  }

  /** Updates this hasher with {@code len} bytes starting at {@code off} in the given buffer. */
  protected void update(byte[] b, int off, int len) {
    for (int i = off; i < off + len; i++) {
      update(b[i]);
    }
  }

    /**
     * Returns a new tree starting at this node, filtering the children.
     * Note that this node will not be filtered and only the children
     * and its descendant will be checked.
     *
     * @param filter the filter to apply
     * @return a new filtered graph
     */
    @Nonnull
    Node filter(@Nonnull Predicate<Node> filter);

    /**
     * Returns a detailed string representation of this dependency node.