final transient Collection<E> delegate;

  ForwardingImmutableCollection(Collection<E> delegate) {
    this.delegate = delegate;
  }

  @Override
  public UnmodifiableIterator<E> iterator() {
    return Iterators.unmodifiableIterator(delegate.iterator());
  }

  @Override
  public boolean contains(@Nullable Object object) {
    return object != null && delegate.contains(object);
  }

  @Override

        assertEquals(500L, callback1.getExecuteTime());

        assertEquals(20L, callback2.getDocumentSize());
        assertEquals(1000L, callback2.getExecuteTime());

        // Test store operations
        DataStoreParams params = new DataStoreParams();
        Map<String, Object> data = new HashMap<>();

        callback1.store(params, data);
        assertEquals(11L, callback1.getDocumentSize());

        }

        // Initialize the digest once to validate configuration
        this.digest = createMacInstance();
    }

    /**
     * Create a new Mac instance for thread-safe operations
     * @return initialized Mac instance
     * @throws GeneralSecurityException if Mac cannot be created
     */
    private Mac createMacInstance() throws GeneralSecurityException {
        if (this.closed) {

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code indexOf()} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code lastIndexOf()} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible

package jcifs.internal.smb2.ioctl;

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 SRV_COPYCHUNK data structure. This structure represents a single chunk specification
 * for server-side copy operations.
 *
 * @author mbechler
 *
 */
public class SrvCopychunk implements Encodable {

    private final long sourceOffset;
    private final long targetOffset;
    private final int length;

    /**

 */
package jcifs.internal.smb2.ioctl;

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 SRV_COPYCHUNK_COPY data structure. This structure is used to perform server-side
 * copy operations with multiple chunk specifications.
 *
 * @author mbechler
 *
 */
public class SrvCopychunkCopy implements Encodable {

    private final byte[] sourceKey;
    private final SrvCopychunk[] chunks;

    }

    public void test_ofNullable_chainedOperations() {
        // Test chaining operations on the returned OptionalEntity
        String testValue = "HELLO WORLD";
        OptionalEntity<String> result = OptionalUtil.ofNullable(testValue);

        assertTrue(result.isPresent());

        // Test that we can chain operations
        String processed = result.map(s -> s.toLowerCase()).orElse("default");

    /** Number of threads to use for thumbnail generation. */
    protected int numOfThreads = 1;

    /** Flag indicating whether to perform cleanup operations. */
    protected boolean cleanup = false;

    /**
     * Default constructor for the GenerateThumbnailJob.
     */
    public GenerateThumbnailJob() {
        super();
    }

    /**

## Combine predefined responses and custom ones { #combine-predefined-responses-and-custom-ones }

You might want to have some predefined responses that apply to many *path operations*, but you want to combine them with custom responses needed by each *path operation*.

For those cases, you can use the Python technique of "unpacking" a `dict` with `**dict_to_unpack`:

```Python
old_dict = {