*  XPath namespace prefixes are resolved from the namespaceNode.
     *  The implementation of this is a little slow, since it creates
     *  a number of objects each time it is called.  This could be optimized
     *  to keep the same objects around, but then thread-safety issues would arise.
     *
     *  @param contextNode The node to start searching from.
     *  @param expression A valid XPath string.

            byte[] newKey = deriveKey(currentKey, rotationLabel, String.valueOf(System.currentTimeMillis()).getBytes(), currentKey.length);

            // Archive old key (keep last version for rollback)
            String archiveId = sessionId + ".v" + currentVersion;
            storeSessionKeyInternal(archiveId, currentKey, "AES");

            // Store new key

            // xapth.<field>=<value>
        }

        // config.*
        public static class Config {
            public static final String KEEP_ORIGINAL_BODY = "keep.original.body";
            public static final String CLEANUP_ALL = "cleanup.all";
            public static final String CLEANUP_URL_FILTERS = "cleanup.urlFilters";
            public static final String JCIFS_PREFIX = "jcifs.";

2. Write implementation following existing patterns
3. Add comprehensive tests
4. Run `mvn formatter:format license:format test`
5. Update JavaDoc for changed/new classes

**Principles:**
- Avoid over-engineering - keep solutions simple
- Only expose necessary public APIs
- Validate parameters with `Objects.requireNonNull()`
- Provide detailed error messages with context
- Add logging with contextual information

### Resource Files

                return host + "/"; // mimic the JVM behaviour for root or server
            }
            if (path.endsWith("/")) {
                return path.substring(0, path.length()); // keep trailing slash
            }
            String[] parts = path.split("/");
            return parts[parts.length - 1];
        }

        @Override
        public String getParent() {

                this.dcListExpiration = now + this.netbiosCacheTimeout * 1000L;
                if (list != null && list.length > 0) {
                    this.dcList = list;
                } else { /* keep using the old list */
                    this.dcListExpiration = now + 1000 * 60 * 15; /* 15 min */
                    log.warn("Failed to retrieve DC list from WINS");
                }
            }

6. Update JavaDoc

### When Fixing Bugs

1. Write failing test first
2. Understand root cause
3. Minimal changes
4. Verify no regressions

### When Refactoring

1. Preserve behavior
2. Keep tests green
3. Small incremental steps
4. Don't mix with new features

### Code Quality Checklist

- [ ] Java conventions followed
- [ ] JavaDoc for public APIs
- [ ] Tests pass (`mvn test`)

    }

    @Test
    @DisplayName("Mockito presence: no collaborator interactions to verify")
    void noDependenciesToMock() {
        // This class has no external collaborators; nothing to verify.
        // Keep Mockito import usage minimal to satisfy build-time linkage.
        Runnable r = mock(Runnable.class);
        r.run();
        verify(r, times(1)).run();
    }

    // - Can cache directory enumeration results
    // - Can cache file existence queries
    // - Can cache basic file attributes
    
    // HANDLE_CACHING for directories means:
    // - Can keep directory handle open
    // - Can cache subdirectory handles
    
    // WRITE_CACHING for directories means:
    // - Can cache file creation/deletion notifications
    // - Can perform optimistic file operations
    

        // Return just the base; caller is responsible for placing ctx at the correct absolute offset.
        // We will return a composite buffer from the test when building the full packet.
        // To keep this helper simple, return base and let the caller append/pad and inject ctx.
        return base;
    }

    /**
     * Build a full SMB2 packet combining header and provided body, optionally injecting context bytes.