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

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

public class LeaseTest {
    
    @Test
    public void testLeaseKeyGeneration() {
        Smb2LeaseKey key1 = new Smb2LeaseKey();
        Smb2LeaseKey key2 = new Smb2LeaseKey();
        
        assertNotNull(key1.getKey());
        assertEquals(16, key1.getKey().length);