import org.junit.jupiter.api.Test;

class MessageTest {

    private Message message;

    @BeforeEach
    void setUp() {
        // Create an anonymous implementation of the Message interface for testing
        message = new Message() {
            private boolean retainPayload = false;
            private byte[] rawPayload;

            @Override
            public void retainPayload() {

            throw new LlmException("Request interrupted", LlmException.ERROR_TIMEOUT);
        }
    }

    /**
     * Executes a streaming chat request with concurrency control via Semaphore.
     *
     * @param request the chat request
     * @param callback the streaming callback
     * @throws LlmException if too many concurrent requests or interrupted
     */

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;
import java.util.Objects;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**

      }
    };
  }

  /**
   * Returns a "nefarious" map entry with the specified key and value, meaning an entry that is
   * suitable for testing that map entries cannot be modified via a nefarious implementation of
   * equals. This is used for testing unmodifiable collections of map entries; for example, it
   * should not be possible to access the raw (modifiable) map entry via a nefarious equals method.
   */

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Strings;
import com.google.common.collect.testing.IteratorTester;
import com.google.common.collect.testing.MinimalCollection;
import com.google.common.collect.testing.MinimalIterable;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Iterator;
import java.util.List;

Do not translate the content of code blocks, except for comments in the language which the code block uses.

Examples:

Source (English) - The code block is a bash code example with one comment:

```bash
# Print greeting
echo "Hello, World!"
```

Result (German):

```bash
# Gruß ausgeben
echo "Hello, World!"
```

import com.google.errorprone.annotations.DoNotMock;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.jspecify.annotations.Nullable;

/**
 * An iterator that supports a one-element lookahead while iterating.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionHelpersExplained#peekingiterator">{@code
 * PeekingIterator}</a>.
 *
 * @author Mick Killianey
 * @since 2.0

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 * the License.
 */

package com.google.common.cache;

import org.jspecify.annotations.NullUnmarked;

/**
 * Utility {@link Weigher} implementations intended for use in testing.
 *
 * @author Charles Fry
 */
@NullUnmarked
public final class TestingWeighers {

  /** Returns a {@link Weigher} that returns the given {@code constant} for every request. */

/**
 * Adds support for starting an Elasticsearch cluster before running integration
 * tests. Used in conjunction with {@link StandaloneRestTestPlugin} for qa
 * projects and in conjunction with {@link BuildPlugin} for testing the rest
 * client.
 */
public class RestTestPlugin implements Plugin<Project> {
    private final List<String> REQUIRED_PLUGINS = Arrays.asList("elasticsearch.build", "elasticsearch.standalone-rest-test");

    @Override