try {
            final NdrBuffer buf = encodeMessage(msg, out);
            final int off = sendFragments(msg, out, buf);

            // last fragment gets written (possibly) using transact/call semantics
            final int have = doSendReceiveFragment(out, off, msg.length, inB);

            if (have != 0) {
                final NdrBuffer hdrBuf = new NdrBuffer(inB, 0);
                setupReceivedFragment(hdrBuf);

        // toString should include class marker and not throw
        assertTrue(cloned.toString().startsWith("Kerb5Authenticator["));
    }

    @Test
    @DisplayName("equals/hashCode: subject semantics")
    void equalsAndHashCode_subjectSemantics() {
        Kerb5Authenticator a = new Kerb5Authenticator((Subject) null);
        Kerb5Authenticator b = new Kerb5Authenticator((Subject) null);

## 3. Directory Lease Types

### 3.1 Directory-Specific Lease States
```java
public class DirectoryLeaseState extends Smb2LeaseState {
    // Standard lease states apply, plus directory-specific semantics:
    
    // READ_CACHING for directories means:
    // - Can cache directory enumeration results
    // - Can cache file existence queries
    // - Can cache basic file attributes