* shared resources.
 *
 * @param <K> the most general type of keys this listener can listen for; for example {@code Object}
 *     if any key is acceptable
 * @param <V> the most general type of values this listener can listen for; for example {@code
 *     Object} if any key is acceptable
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
@FunctionalInterface

 * shared resources.
 *
 * @param <K> the most general type of keys this listener can listen for; for example {@code Object}
 *     if any key is acceptable
 * @param <V> the most general type of values this listener can listen for; for example {@code
 *     Object} if any key is acceptable
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible

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

/**
 * A listener for session events.
 * TODO: open this to other events like similar to {@code org.apache.maven.eventspy.EventSpy}
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
public interface Listener {
    void onEvent(@Nonnull Event event);

        @Override
        public void call(Listener listener) {
          listener.stopped();
        }

        @Override
        public String toString() {
          return "stopped()";
        }
      };

  /**
   * A listener for the aggregate state changes of the services that are under management. Users
   * that need to listen to more fine-grained events (such as when each particular {@linkplain

 * under the License.
 */
package org.apache.maven.artifact.resolver;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.versioning.VersionRange;

/**
 * Listens to the resolution process and handles events.
 *
 */
@Deprecated
public interface ResolutionListener {
    String ROLE = ResolutionListener.class.getName();

    int TEST_ARTIFACT = 1;

 *
 * <pre>
 * void runManyThings({@literal List<ThingToRun>} thingsToRun) {
 *   for (ThingToRun thingToRun : thingsToRun) {
 *     thingToRun.run(); // say this may throw an exception, but you want to
 *                       // always run all thingsToRun
 *   }
 * }
 * </pre>
 *
 * <p>This is what the code would become:
 *
 * <pre>
 * void runManyThings({@literal List<ThingToRun>} thingsToRun) {

     * "java.protocol.handler.pkgs", the VM uses one or more default
     * packages, which are vendor specific.  Sun's is included below
     * for convenience; others could be as well.  If a particular vendor's
     * package isn't listed, it can be specified in
     * "java.protocol.handler.pkgs".
     */
    private static final String[] JVM_VENDOR_DEFAULT_PKGS = new String[] {
        "sun.net.www.protocol"
    };

 * guarantees (see {@link ImmutableCollection} for details). Implementations are available for both
 * the JDK collection types and the Guava collection types (listed below).
 *
 * <h2>Collection types</h2>
 *
 * <dl>
 *   <dt>{@link Multimap}
 *   <dd>A new type, which is similar to {@link java.util.Map}, but may contain multiple entries

   *     a provided list is null
   * @since 19.0
   */
  public static <B> List<List<B>> cartesianProduct(List<? extends List<? extends B>> lists) {
    return CartesianList.create(lists);
  }

  /**
   * Returns every possible list that can be formed by choosing one element from each of the given

        assertThat(projects, hasItem(pluginLevelDepProject));

        // the declaring project MUST be listed after the plugin and its plugin-level dep, though.
        assertEquals(declaringProject, projects.get(3));
    }

    @Test
    void testPluginDependenciesInfluenceSorting_DeclarationInParent() throws Exception {
        List<MavenProject> projects = new ArrayList<>();