*
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#empty}.
   *
   * @since 20.0
   */
  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  public static <E extends @Nullable Object> FluentIterable<E> of() {
    return FluentIterable.from(Collections.<E>emptyList());
  }

  /**
   * Returns a fluent iterable containing the specified elements in order.
   *

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.features.CollectionSize;
import java.util.Collection;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * The subject-generator interface accepted by Collection testers, for testing a Collection at one
 * particular {@link CollectionSize}.
 *

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.api.cache;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nullable;

/**
 * Interface defining metadata for cache behavior and lifecycle management.
 * Implementations can specify how long cached data should be retained.
 *
 * @since 4.0.0
 */
@Experimental

 * @since 4.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class ThreadFactoryBuilder {
  private @Nullable String nameFormat = null;
  private @Nullable Boolean daemon = null;
  private @Nullable Integer priority = null;
  private @Nullable UncaughtExceptionHandler uncaughtExceptionHandler = null;
  private @Nullable ThreadFactory backingThreadFactory = null;

  /**
   * Creates a new {@link ThreadFactory} builder.
   *

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@NullMarked
public class ListMultimapAsMapTester<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractListMultimapTester<K, V> {
  public void testAsMapValuesImplementList() {
    for (Collection<V> valueCollection : multimap().asMap().values()) {

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@NullMarked
public class ListMultimapAsMapTester<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractListMultimapTester<K, V> {
  public void testAsMapValuesImplementList() {
    for (Collection<V> valueCollection : multimap().asMap().values()) {

 */
@Experimental
@Immutable
@Provider
public interface Node {

    /**
     * @return artifact for this node
     */
    @Nullable
    Artifact getArtifact();

    /**
     * @return dependency for this node
     */
    @Nullable
    Dependency getDependency();

    /**
     * Gets the child nodes of this node.
     *
     * @return the child nodes of this node, never {@code null}
     */

import com.google.errorprone.annotations.OverridingMethodsMustInvokeSuper;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;
import org.junit.Ignore;

/**
 * Base class for testers of classes (including {@link Collection} and {@link java.util.Map Map})
 * that contain elements.
 *
 * @param <C> the type of the container

import com.google.common.annotations.J2ktIncompatible;
import java.util.AbstractList;
import java.util.List;
import java.util.ListIterator;
import java.util.RandomAccess;
import org.jspecify.annotations.Nullable;

/**
 * Implementation of {@link Lists#cartesianProduct(List)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class CartesianList<E> extends AbstractList<List<E>> implements RandomAccess {

   * Tests that {@code cls} properly checks null on all constructor and method parameters that
   * aren't annotated nullable (according to the rules of {@link NullPointerTester}). In details:
   *
   * <ul>
   *   <li>All non-private static methods are checked such that passing null for any parameter
   *       that's not annotated nullable should throw {@link NullPointerException}.