if (entry != null) {
                    entry.invalidate();
                }
                invalidateChildren(child);  // Recursive
            }
        }
    }
}
```

## 8. Testing Strategy

### 8.1 Unit Tests
```java
@Test
public void testDirectoryCacheEntry() {
    DirectoryCacheEntry entry = new DirectoryCacheEntry(

import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.TestUtil.assumeNotWindows
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okhttp3.tls.HeldCertificate
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import org.junit.jupiter.api.AfterEach

      assertFalse(MoreFiles.isDirectory(NOFOLLOW_LINKS).apply(symlinkToDir));
      assertFalse(MoreFiles.isRegularFile(NOFOLLOW_LINKS).apply(symlinkToFile));
    }
  }

  /**
   * Creates a new file system for testing that supports the given features in addition to
   * supporting symbolic links. The file system is created initially having the following file
   * structure:
   *
   * <pre>
   *   /
   *      work/

}

public String getHandleStateDirectory() {
    return getProperty(HANDLE_STATE_DIR, 
        System.getProperty("user.home") + "/.jcifs/handles");
}
```

## 8. Testing Strategy

### 8.1 Unit Tests
```java
package jcifs.tests.smb3;

import org.junit.Test;
import static org.junit.Assert.*;

public class PersistentHandleTest {
    
    @Test

import okhttp3.TestUtil.assumeNotWindows
import okhttp3.internal.RecordingOkAuthenticator
import okhttp3.internal.duplex.AsyncRequestBody
import okhttp3.internal.duplex.MockSocketHandler
import okhttp3.testing.PlatformRule
import okio.BufferedSink
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Disabled

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.testing;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static java.nio.charset.StandardCharsets.UTF_8;

- we need to deal with a shared context for plugins, like the guarded mojos
- we need to deal with plugins as core application logic which can also interact with plugins

* Along with this comes the testing strategies that make this work
* The repository model where plugins can be stored and cataloged
* Bridging this into an OSGi system: if this could be done then we can basically take over p2

TODO

            return lastChatPrompt;
        }

        LlmChatRequest getLastChatRequest() {
            return lastChatRequest;
        }

        // Expose protected methods for testing

        String testBuildIntentDetectionSystemPrompt() {
            return buildIntentDetectionSystemPrompt();
        }

    private File tempDir;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        // Create temp directory for testing first
        tempDir = File.createTempFile("suggestjob_test", "");
        tempDir.delete();
        tempDir.mkdirs();
        tempDir.deleteOnExit();

        // Create mock objects

import okhttp3.CertificatePinner.Companion.pin
import okhttp3.Headers.Companion.headersOf
import okhttp3.internal.connection.ConnectionListener
import okhttp3.internal.platform.Platform
import okhttp3.testing.PlatformRule
import okio.BufferedSink
import okio.ForwardingFileSystem
import okio.IOException
import okio.Path
import okio.Path.Companion.toPath
import okio.fakefilesystem.FakeFileSystem