try (SmbSessionImpl treesess = t.getSession()) {
            if (treesess.getCredentials().isAnonymous() || treesess.getCredentials().isGuest()) {
                // refresh anonymous session or fallback to anonymous from guest login
                try (SmbSessionInternal s =
                        trans.getSmbSession(this.ctx.withAnonymousCredentials(), treesess.getTargetHost(), treesess.getTargetDomain())

    } catch (TimeoutException e) {
        // Force lease release if break handling times out
        releaseLease(key);
        log.warn("Lease break timeout for key: {}", key);
    }
}
```

### 10.2 Fallback to Oplocks
```java
if (!context.getConfig().isUseLeases() || !session.supports(SMB3_0)) {
    // Fall back to traditional oplock mechanism
    useOplockInstead();
}
```

## 11. Monitoring and Metrics

            if (entry.getInconsistencyCount() > 5) {
                entry.invalidate();
            }
        }
    }
}
```

### 9.2 Fallback Mechanisms
```java
public class DirectoryOperationFallback {
    public SmbFile[] safeListFiles(SmbFile directory) throws IOException {
        try {
            // Try cached listing first

package lru

// golang -lru
// https://github.com/hashicorp/golang-lru
import (
	"sync"
	"time"
)

// EvictCallback is used to get a callback when a cache entry is evicted
type EvictCallback[K comparable, V any] func(key K, value V)

// LRU implements a thread-safe LRU with expirable entries.
type LRU[K comparable, V any] struct {
	size      int
	evictList *LruList[K, V]
	items     map[K]*Entry[K, V]
	onEvict   EvictCallback[K, V]

        final StreamResponse streamResponse = osddHelper.asStream();
        assertEquals("text/xml; charset=UTF-8", streamResponse.getContentType());
        streamResponse.getStreamCall().callback(new WrittenStreamOut() {

            @Override
            public void write(final InputStream ins) throws IOException {
                assertEquals("""
                        <?xml version="1.0" encoding="UTF-8"?>

pkg database/sql/driver, type Stmt interface, Query([]Value) (Rows, error)
pkg database/sql/driver, type Tx interface { Commit, Rollback }
pkg database/sql/driver, type Tx interface, Commit() error
pkg database/sql/driver, type Tx interface, Rollback() error
pkg database/sql/driver, type Value interface {}
pkg database/sql/driver, type ValueConverter interface { ConvertValue }

                org.dbflute.helper.jprop.JavaPropertiesResult result = reader.read();
                propField.set(this, result);
            } catch (Exception e) {
                // Fallback: ignore initialization errors since we override methods anyway
            }
        }
    }

			}
			s += "}"
		}
		res = append(res, []byte(s)...)
	}
	res = append(res, '}')
	return res, nil
}

// files returns files as callback.
func (x xlMetaInlineData) files(fn func(name string, data []byte)) error {
	if len(x) == 0 {
		return nil
	}
	if !x.versionOK() {
		return errors.New("xlMetaInlineData: unknown version")
	}

            } finally {
                SMailCallbackContext.clearPreparedMessageHookOnThread();
            }
        }
    }

    /**
     * Retrieves a value from a map with a default fallback.
     *
     * @param dataMap the map to retrieve the value from
     * @param key the key to look up
     * @param defaultValue the default value to return if key is not found or value is blank

          // Some Android 5.0.x Samsung devices have bugs in JDK reflection APIs that cause
          // getDeclaredField to throw a NoSuchFieldException when the field is definitely there.
          // For these users fallback to a suboptimal implementation, based on synchronized. This
          // will be a definite performance hit to those users.
          thrownAtomicReferenceFieldUpdaterFailure = atomicReferenceFieldUpdaterFailure;