assertEquals(64, newHash.length); // SHA-512 produces 64 bytes
        assertNotEquals(oldHash, newHash); // Should be different instance
    }

    /**
     * Test pre-auth integrity with non-SMB3.1.1 should throw exception
     */
    @Test
    @DisplayName("Pre-auth integrity should fail with non-SMB3.1.1")
    void testPreauthWithNonSmb311() throws Exception {
        // Setup SMB3.0

            // Check if transport creation failed
            if (newTransport == null) {
                throw new IOException("Failed to create new transport");
            }

            // Reconnect
            channel.setState(ChannelState.CONNECTING);

        artifact.setFile(localFile);

        if (!localFile.exists()) {
            if (request.getRemoteRepositories().isEmpty()) {
                throw new IOException(localFile + " does not exist and no remote repositories are configured");
            }

            ArtifactRepository remoteRepo = request.getRemoteRepositories().get(0);

    val address = canonicalizeInetAddress(inetAddressByteArray)
    if (address.size == 16) return inet6AddressToAscii(address)
    if (address.size == 4) return inet4AddressToAscii(address) // An IPv4-mapped IPv6 address.
    throw AssertionError("Invalid IPv6 address: '$host'")
  }

  val result = idnToAscii(host) ?: return null
  if (result.isEmpty()) return null
  if (result.containsInvalidHostnameAsciiCodes()) return null

```

### Exception Handling
```java
import org.codelibs.core.exception.*;

// Runtime exception wrappers eliminate try-catch boilerplate
try {
    // Code that might throw checked exceptions
    return ClassUtil.newInstance(className); // Wraps checked exceptions automatically
} catch (ClassNotFoundRuntimeException e) {
    // Handle the wrapped exception

            bb.putShort((short) 0); // tflags high bytes

            // Invalid referral version
            bb.putShort((short) 99); // unsupported version

            // Should throw exception for unsupported version
            assertThrows(Exception.class, () -> {
                buffer.decode(testBuffer, 0, testBuffer.length);
            });
        }
    }

    @Nested

        void testInsufficientBufferLength() {
            FileFsSizeInformation info = new FileFsSizeInformation();
            byte[] buffer = new byte[10]; // Too small

            // Should throw ArrayIndexOutOfBoundsException for insufficient buffer
            assertThrows(ArrayIndexOutOfBoundsException.class, () -> {
                info.decode(buffer, 0, buffer.length);
            });
        }

     */
    @Test
    public void testValidNegotiateResponse() throws SMBProtocolDecodingException {
        byte[] validBuffer = createValidNegotiateResponseBuffer();

        // Should not throw any exception
        int bytesRead = response.readBytesWireFormat(validBuffer, 0);

        assertTrue(bytesRead > 0);
        assertEquals(0x0302, response.getDialectRevision()); // SMB 3.0.2

   */
  public static <T> T firstNonNull(@Nullable T first, @Nullable T second) {
    if (first != null) {
      return first;
    }
    if (second != null) {
      return second;
    }
    throw new NullPointerException("Both parameters are null");
  }

  /**
   * Creates an instance of {@link ToStringHelper}.
   *
   * <p>This is helpful for implementing {@link Object#toString()}. Specification by example:

                this.calledName = null;
            }
        } else {
            this.calledName = null;
        }

        return this.calledName;
    }

    /*
     * There are three degrees of state that any NbtAddress can have.
     *
     * 1) IP Address - If a dot-quad IP string is used with getByName (or used
     * to create an NbtAddress internal to this netbios package), no query is