Appendable secretlyAWriter = new StringWriter();
    result = CharStreams.asWriter(secretlyAWriter);
    assertSame(secretlyAWriter, result);
  }

  // CharStreams.copy has type specific optimizations for Readers,StringBuilders and Writers

  public void testCopy() throws IOException {
    StringBuilder builder = new StringBuilder();
    long copied =
        CharStreams.copy(

    Appendable secretlyAWriter = new StringWriter();
    result = CharStreams.asWriter(secretlyAWriter);
    assertSame(secretlyAWriter, result);
  }

  // CharStreams.copy has type specific optimizations for Readers,StringBuilders and Writers

  public void testCopy() throws IOException {
    StringBuilder builder = new StringBuilder();
    long copied =
        CharStreams.copy(

import java.nio.CharBuffer;
import java.util.Random;
import org.jspecify.annotations.NullUnmarked;

/**
 * Benchmarks for {@link CharStreams#copy}.
 *
 * <p>{@link CharStreams#copy} has type specific optimizations for various common Appendable and
 * Reader implementations, this compares the performance of the different options.
 */
// These benchmarks allocate a lot of data so use a large heap
@VmOptions({"-Xms12g", "-Xmx12g", "-d64"})

    checkElementIndex(index, size);
    // requireNonNull is safe because we guarantee that the first `size` elements are non-null.
    return (E) requireNonNull(array[index]);
  }

  // TODO(lowasser): benchmark optimizations for equals() and see if they're worthwhile

  // redeclare to help optimizers with b/310253115
  @SuppressWarnings("RedundantOverride")
  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {

- **Template Method** - Resource traversal utilities with customizable handlers
- **Utility Classes** - All core functionality exposed through static utility methods for easy access

### Performance Optimizations
- **Caching** - Bean descriptors and reflection metadata are cached for improved performance
- **Lazy initialization** - Resources and expensive operations are initialized only when needed  

package jcifs.smb1.smb1;

import jcifs.smb1.Config;

/**
 * Buffer cache implementation for SMB1 protocol operations.
 * Manages a pool of byte buffers to reduce garbage collection overhead.
 *
 * Performance optimizations:
 * - Uses ConcurrentLinkedQueue for O(1) operations
 * - Lock-free operations for better concurrency
 * - Proper buffer validation and limits
 */
public class BufferCache {

    /**

        assertTrue("Boundary value tests should be fast", true);
    }

    public void test_performance_optimization() {
        // Verify that performance optimizations are working
        long startTime = System.currentTimeMillis();
        try {
            dataIndexHelper.crawl("performance-test");
        } catch (Exception e) {
            // Expected
        }

        } catch (InterruptedException e) {
            logExecutor.shutdownNow();
            Thread.currentThread().interrupt();
        }
    }

    /**
     * Log a security event with performance optimizations
     *
     * @param type event type
     * @param severity event severity
     * @param message event message
     * @param context additional context
     */

        double totalTimeMs = (end - start) / 1_000_000.0;

        System.out.printf("Overall Performance Test: completed in %.2f ms%n", totalTimeMs);

        // Should complete very quickly with all optimizations
        assertTrue(totalTimeMs < 100, "All operations should complete quickly with performance fixes");

        pool.close();
    }

    return getBooleanProperty(DIRECTORY_NOTIFICATIONS_ENABLED, true);
}

public int getMaxDirectoryCacheEntries() {
    return getIntProperty(MAX_DIRECTORY_CACHE_ENTRIES, 1000);
}
```

## 7. Performance Optimizations

### 7.1 Batch Directory Operations
```java
public class BatchDirectoryOperations {
    private final DirectoryLeaseManager leaseManager;
    
    public List<SmbFile> batchExists(List<String> paths) {