*/
    public enum Severity {
        RECOVERABLE, // Can retry the operation
        TRANSIENT, // Temporary error, retry after delay
        PERMANENT, // Operation cannot succeed
        FATAL // Connection or session must be terminated
    }

    /**
     * Error categories
     */
    public enum Category {
        AUTHENTICATION, AUTHORIZATION, NETWORK, PROTOCOL, RESOURCE, CONFIGURATION, ENCRYPTION, TIMEOUT, IO, UNKNOWN
    }

import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * SMB2 Oplock Break notification message. This server-initiated message notifies the client
 * that an opportunistic lock must be broken due to conflicting access from another client.
 *
 * @author mbechler
 *
 */
public class Smb2OplockBreakNotification extends ServerMessageBlock2Response {

    private byte oplockLevel;

    void implementationRejectsNulls() {
        SmbFilenameFilter filter = (dir, name) -> {
            if (dir == null || name == null) {
                throw new NullPointerException("dir and name must be non-null");
            }
            return true;
        };

        NullPointerException npe1 = assertThrows(NullPointerException.class, () -> filter.accept(null, "x"));

import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * SMB1 Delete file request message.
 *
 * This command is used to delete a file on the server.
 * The file must not be in use before it can be deleted.
 */
public class SmbComDelete extends ServerMessageBlock {

    private final int searchAttributes;

    /**
     * Creates a new SMB1 delete file request.
     *

     * both converted to lowercase for case-insensitive lookup.
     *
     * @param name the name to register the data store under, must not be null
     * @param dataStore the data store instance to register, must not be null
     * @throws IllegalArgumentException if either name or dataStore is null
     */
    public void add(final String name, final DataStore dataStore) {

        // Arrange & Act
        SmbEndOfFileException ex = new SmbEndOfFileException();

        // Assert
        assertEquals("Unexpectedly reached end of file", ex.getMessage(), "Default message must match");
        assertEquals(NtStatus.NT_STATUS_UNSUCCESSFUL, ex.getNtStatus(), "Default NT status should be UNSUCCESSFUL");
        assertNull(ex.getCause(), "Cause should be null by default");

```

3. **Add test with sample file** in `src/test/resources/`

### Configuring URL Filtering

```java
// Include patterns (must match)
crawler.urlFilter.addInclude("https://example.com/.*");

// Exclude patterns (must not match)
crawler.urlFilter.addExclude(".*\\.(css|js|png|jpg)$");
```

### Setting Crawl Limits

```java

        try {
            new ContentCache((byte[]) null);
            fail("Expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            assertTrue(e.getMessage().contains("data must not be null"));
        }
    }

    @Test
    public void testMemoryBasedCacheDefensiveCopy() throws IOException {
        byte[] data = "Hello, World!".getBytes();
        byte[] originalData = data.clone();

    }

    /**
     * Adds a {@link TraverserFactory}.
     *
     * @param protocol
     *            The URL protocol. Must not be {@literal null} or empty.
     * @param factory
     *            The {@link Traverser} factory for the protocol. Must not be {@literal null}.
     */
    public static void addTraverserFactory(final String protocol, final TraverserFactory factory) {

        keyGen.init(56);
        SecretKey secretKey = keyGen.generateKey();
        Key key = new KerberosKey(null, secretKey.getEncoded(), KerberosConstants.DES_ENC_TYPE, 0);
        byte[] data = new byte[32]; // Dummy data, must be multiple of 8
        byte[] decrypted = KerberosEncData.decrypt(data, key, KerberosConstants.DES_ENC_TYPE);
        assertNotNull(decrypted);