assertEquals(1, chain3.updateCallCount);
    }

    // Test addChain null handling
    @Test
    public void test_addChain_withNull() {
        // ArrayUtils.addAll handles null gracefully by adding it to the array
        authenticationManager.addChain(null);

        // Verify null chain doesn't cause issues during operations
        User user = createTestUser("testuser");
        try {

                            (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF },
                    originalFileId, "Original FileId array should remain all 0xFF");
        }
    }

    @Nested
    @DisplayName("Constant Relationships")
    class ConstantRelationships {

        @Test

      checkNotNull(sequence);
      return "";
    }

    @Override
    public String replaceFrom(CharSequence sequence, char replacement) {
      char[] array = new char[sequence.length()];
      Arrays.fill(array, replacement);
      return new String(array);
    }

    @Override
    public String replaceFrom(CharSequence sequence, CharSequence replacement) {

        File file = cos.getFile();
        assertTrue(file.exists());
        cos.close();
    }

    @Test
    public void testEmptyWrite() throws IOException {
        // Writing empty array should work
        ContentOutputStream cos = new ContentOutputStream(10, Curl.tmpDir);
        cos.write(new byte[] {});
        assertTrue(cos.isInMemory());
        assertFalse(cos.done);
        cos.close();

@SafeVarargs
internal fun <T> immutableListOf(vararg elements: T): List<T> = elements.toImmutableList()

/** Returns an immutable list from copy of this. */
internal fun <T> Array<out T>?.toImmutableList(): List<T> =
  when {
    this.isNullOrEmpty() -> emptyList()
    this.size == 1 -> Collections.singletonList(this[0])
    else -> this.clone().asList().unmodifiable()
  }

   * they're defined above -- including logic to add and subtract 1 to map between the values stored
   * in the predecessor/successor arrays and the indexes in the elements array that they identify.
   */

	if err != nil {
		err = msgp.WrapError(err, "Error")
		return
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *DiskInfo) EncodeMsg(en *msgp.Writer) (err error) {
	// array header, size 18
	err = en.Append(0xdc, 0x0, 0x12)
	if err != nil {
		return
	}
	err = en.WriteUint64(z.Total)
	if err != nil {
		err = msgp.WrapError(err, "Total")
		return
	}

  /**
   * Parses a bracketed host-port string, throwing IllegalArgumentException if parsing fails.
   *
   * @param hostPortString the full bracketed host-port specification. Port might not be specified.
   * @return an array with 2 strings: host and port, in that order.
   * @throws IllegalArgumentException if parsing the bracketed host-port string fails.
   */
  private static String[] getHostAndPortFromBracketedHost(String hostPortString) {

    val start = (code shl shift) and 0xff
    val end = 1 shl shift
    node.children!!.fill(terminal, start, start + end)
  }

  private class Node {
    /** Null if terminal. */
    val children: Array<Node?>?

    /** Terminal nodes have a symbol. */
    val symbol: Int

    /** Number of bits represented in the terminal node. */
    val terminalBitCount: Int

    /** Construct an internal node. */

        }
        return false;
    }

    /**
     * Extracts a string array from JSON response.
     *
     * @param json the JSON response
     * @param key the key to extract
     * @return the extracted string array
     */
    protected List<String> extractJsonArray(final String json, final String key) {
        try {