}

  /**
   * Returns the result of adding this and {@code val}. If the result would have more than 64 bits,
   * returns the low 64 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedLong plus(UnsignedLong val) {
    return fromLongBits(this.value + checkNotNull(val).value);
  }

  /**
   * Returns the result of subtracting this and {@code val}. If the result would have more than 64

  @Override
  public SortedMultiset<E> descendingMultiset() {
    UnmodifiableSortedMultiset<E> result = descendingMultiset;
    if (result == null) {
      result = new UnmodifiableSortedMultiset<E>(delegate().descendingMultiset());
      result.descendingMultiset = this;
      return descendingMultiset = result;
    }
    return result;
  }

  @Override
  public @Nullable Entry<E> firstEntry() {

    void testAs_Object_Success() throws PACDecodingException {
        // Test successful casting
        String expected = "test string";
        Object obj = expected;
        String result = ASN1Util.as(String.class, obj);
        assertSame(expected, result);
    }

    @Test
    void testAs_Object_Failure() {
        // Test failed casting
        Object obj = 123; // Integer
        assertThrows(PACDecodingException.class, () -> {

            }
        }, CrawlingInfoService.class.getCanonicalName());

        Map<String, String> result = crawlingInfoHelper.getInfoMap(sessionId);
        assertEquals(2, result.size());
        assertEquals("1500", result.get("total_docs"));
        assertEquals("3", result.get("error_count"));
    }

    public void test_setMaxSessionIdsInList() {
        crawlingInfoHelper.setMaxSessionIdsInList(500);

    }

    @Override
    protected <RESULT extends ClickLog> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setUrlId(DfTypeUtil.toString(source.get("urlId")));
            result.setDocId(DfTypeUtil.toString(source.get("docId")));
            result.setOrder(DfTypeUtil.toInteger(source.get("order")));

            String result = nc.toString();

            // Should contain hex representation of 0-15
            assertTrue(result.contains("0x"));
            assertTrue(result.contains("dc=LARGEDC"));
            // The hex string should be 32 chars long (16 bytes * 2)
            String hexPart = result.substring(result.indexOf("0x") + 2, result.indexOf(",dc="));

    BigInteger result;
    do {
      result = randomNonNegativeBigInteger(numBits);
    } while (result.signum() == 0);
    return result;
  }

  /**
   * Generates a number in [0, 2^numBits) with an exponential distribution. The floor of the log2 of
   * the result is chosen uniformly at random in [0, numBits), and then the result is chosen in that

        questionNameField.set(response, new Name(mockConfig));

        int result = response.readBodyWireFormat(src, srcIndex);
        assertTrue(result > 0);
    }

    @Test
    void writeRDataWireFormat_shouldReturnZero() {
        byte[] dst = new byte[100];
        int result = response.writeRDataWireFormat(dst, 10);
        assertEquals(0, result);
    }

    @Test

  }

  @Test fun singleIpv6() {
    val result = reorderForHappyEyeballs(listOf(ipv6_ab))

    assertThat(result).isEqualTo(
      listOf(ipv6_ab),
    )
  }

  @Test fun singleIpv4() {
    val result = reorderForHappyEyeballs(listOf(ipv4_10_0_0_6))

    assertThat(result).isEqualTo(
      listOf(ipv4_10_0_0_6),
    )
  }

  @Test fun prioritiseIpv6() {

    }

    @Override
    protected <RESULT extends FailureUrl> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setConfigId(DfTypeUtil.toString(source.get("configId")));
            result.setErrorCount(DfTypeUtil.toInteger(source.get("errorCount")));