/**
 * The "help" goal implementation.
 */
@Named("help")
@Singleton
public class Help implements Goal {

    @Override
    public int execute(UpgradeContext context) throws Exception {
        context.info("Maven Upgrade Tool - Help");
        context.println();
        context.info("Upgrades Maven projects to be compatible with Maven 4.");
        context.println();

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

class DefaultArtifactDescriptorReaderTest extends AbstractRepositoryTestCase {

    @Test
    void testMng5459() throws Exception {
        // prepare
        DefaultArtifactDescriptorReader reader =
                (DefaultArtifactDescriptorReader) getContainer().lookup(ArtifactDescriptorReader.class);

    public LifecycleTaskSegmentCalculatorStub() {
        super(null, null);
    }

    @Override
    public List<TaskSegment> calculateTaskSegments(MavenSession session, List<String> tasks)
            throws PluginNotFoundException, PluginResolutionException, PluginDescriptorParsingException,
                    MojoNotFoundException, NoPluginFoundForPrefixException, InvalidPluginDescriptorException,

     * {@link NullPointerException}. This test is defensive; in real code it
     * would likely be handled elsewhere.
     */
    @Test
    @DisplayName("calling getters on null reference throws NPE")
    void testNullReference() {
        AllocInfo nullRef = null;
        assertThrows(NullPointerException.class, () -> nullRef.getCapacity());
        assertThrows(NullPointerException.class, () -> nullRef.getFree());

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertSame;

class BuildListCalculatorTest {

    @Test
    void testCalculateProjectBuilds() throws Exception {
        LifecycleTaskSegmentCalculator lifecycleTaskSegmentCalculator = getTaskSegmentCalculator();
        BuildListCalculator buildListCalculator = new BuildListCalculator();

/**
 */
class DefaultLegacySupportTest {
    final CountDownLatch latch = new CountDownLatch(1);
    final DefaultLegacySupport defaultLegacySupport = new DefaultLegacySupport();

    @Test
    void testSetSession() throws Exception {

        MavenExecutionRequest mavenExecutionRequest = new DefaultMavenExecutionRequest();
        MavenSession m1 = new MavenSession(null, null, mavenExecutionRequest, null);

  public int add(@ParametricNullness E element, int occurrences) {
    throw new UnsupportedOperationException();
  }

  @CanIgnoreReturnValue
  @Override
  public final boolean remove(@Nullable Object element) {
    return remove(element, 1) > 0;
  }

  @CanIgnoreReturnValue
  @Override
  public int remove(@Nullable Object element, int occurrences) {
    throw new UnsupportedOperationException();
  }

  @CanIgnoreReturnValue

  }

  private void assertSetCountNegativeOldCount() {
    try {
      getMultiset().setCount(e3(), -1, 1);
      fail("calling setCount() with a negative oldCount should throw IllegalArgumentException");
    } catch (IllegalArgumentException expected) {
    }
  }

  // Negative oldCount.

  @CollectionFeature.Require(SUPPORTS_ADD)

   */
  static void assertBasicUrlEscaperExceptPercent(UnicodeEscaper e) {
    // URL escapers should throw null pointer exceptions for null input
    try {
      e.escape((String) null);
      fail("Escaping null string should throw exception");
    } catch (NullPointerException x) {
      // pass
    }

    // All URL escapers should leave 0-9, A-Z, a-z unescaped

  public @Nullable Entry<E> lastEntry() {
    return delegate().lastEntry();
  }

  @Override
  public @Nullable Entry<E> pollFirstEntry() {
    throw new UnsupportedOperationException();
  }

  @Override
  public @Nullable Entry<E> pollLastEntry() {
    throw new UnsupportedOperationException();
  }

  @Override
  public SortedMultiset<E> headMultiset(@ParametricNullness E upperBound, BoundType boundType) {