* @param maxLength the maximum allocated length for the string in bytes
     * @param pointer the pointer/offset to the string data
     */
    public PacUnicodeString(final short length, final short maxLength, final int pointer) {
        this.length = length;
        this.maxLength = maxLength;
        this.pointer = pointer;
    }

    /**
     * Gets the actual length of the string in bytes.
     *
     * @return the string length

   */

  /**
   * Contains the link pointers corresponding with the entries, in the range of [0, size()). The
   * high 32 bits of each long is the "prev" pointer, whereas the low 32 bits is the "succ" pointer
   * (pointing to the nextEntry entry in the linked list). The pointers in [size(), entries.length)
   * are all "null" (UNSET).
   *
   * <p>A node with "prev" pointer equal to {@code ENDPOINT} is the first node in the linked list,

        }

        // NetName (wide string pointer)
        encodeWideStringPointer(buf, netName);

        // ShareName (wide string pointer, optional)
        encodeWideStringPointer(buf, shareName);

        // IpAddress (wide string pointer, optional)
        encodeWideStringPointer(buf, ipAddress);

        // ClientComputerName (wide string pointer)
        encodeWideStringPointer(buf, clientComputerName);

    @Test
    void testConstructorAndGetters() {
        // Create a new instance with some test data
        short length = 10;
        short maxLength = 20;
        int pointer = 100;
        PacUnicodeString pacString = new PacUnicodeString(length, maxLength, pointer);

        // Verify that the object was created
        assertNotNull(pacString, "The PacUnicodeString object should not be null.");

        when(mockNdrBuffer.dec_ndr_long()).thenReturn(0); // null pointer

        shareInfo0.decode(mockNdrBuffer);

        assertNull(shareInfo0.netname);
        verify(mockNdrBuffer).align(4);
        verify(mockNdrBuffer).dec_ndr_long();
        // Should not decode string if pointer is null
        verify(mockDeferredBuffer, never()).dec_ndr_string();
    }

    @Test

            assertEquals(6, entry.name.maximum_length);
        }

        @Test
        @DisplayName("Should decode entry with null buffer pointer")
        void testDecodeNullBufferPointer() throws NdrException {
            // Given: Mocked buffer data with null pointer
            samr.SamrSamEntry entry = new samr.SamrSamEntry();
            when(mockNdrBuffer.dec_ndr_long()).thenReturn(1, 0); // idx, _name_bufferp = 0

    }

    @Test
    @DisplayName("Test PacUnicodeString check method with null pointer")
    void testPacUnicodeStringCheckWithNullPointer() throws Exception {
        // When pointer is 0, the string should be null
        PacUnicodeString unicodeString = new PacUnicodeString((short) 0, (short) 0, 0);

        // check() expects null when pointer is 0 but doesn't accept empty string
        assertThrows(PACDecodingException.class, () -> {

  /**
   * Pointer to the predecessor of an entry in insertion order. ENDPOINT indicates a node is the
   * first node in insertion order; all values at indices ≥ {@link #size()} are UNSET.
   */
  private transient int @Nullable [] predecessor;

  /**
   * Pointer to the successor of an entry in insertion order. ENDPOINT indicates a node is the last

        NdrBuffer dstOut = new NdrBuffer(encodeBufferOut, 0);

        // Simulate info pointer (non-null)
        dstOut.enc_ndr_long(1); // Non-null pointer for info
        info.encode(dstOut); // Encode the info structure

        // Simulate totalentries pointer (non-null)
        dstOut.enc_ndr_long(1); // Non-null pointer for totalentries
        totalentries.encode(dstOut); // Encode the totalentries

   *
   * @throws IllegalArgumentException if there is a loop in the causal chain
   */
  public static Throwable getRootCause(Throwable throwable) {
    // Keep a second pointer that slowly walks the causal chain. If the fast pointer ever catches
    // the slower pointer, then there's a loop.
    Throwable slowPointer = throwable;
    boolean advanceSlowPointer = false;

    Throwable cause;