on why this evaluator is bad. We need to provide either an alternative
  implementation under a different roleHint, or else replace the
  BasicComponentConfigurator.

* Other

  We may need to define a new lifecycle/phase to contextualize a mojo right
  before it's used, and reset it's state afterward. Up to now, the approach
  of most plexus components has been to avoid instance state like the plague.

import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.execution.ProjectDependencyGraph;
import org.apache.maven.project.MavenProject;

/**
 * Provides a sub view of another dependency graph.
 *
 */
class FilteredProjectDependencyGraph implements ProjectDependencyGraph {

    private final ProjectDependencyGraph projectDependencyGraph;

    private final Map<MavenProject, ?> whiteList;

  fun optional(defaultValue: T? = null): BasicDerAdapter<T> = copy(isOptional = true, defaultValue = defaultValue)

  /**
   * Returns a copy of this adapter that sets the encoded or decoded value as the type hint for the
   * other adapters on this SEQUENCE to interrogate.
   */
  fun asTypeHint(): BasicDerAdapter<T> = copy(typeHint = true)

  // Avoid Long.hashCode(long) which isn't available on Android 5.
  override fun hashCode(): Int {

 * @param <G> The type of the generator to be passed to testers in the generated test suite. An
 *     instance of G should somehow provide an instance of the class under test, plus any other
 *     information required to parameterize the test.
 * @see FeatureSpecificTestSuiteBuilder
 * @author George van den Driessche
 */
@GwtIncompatible
public abstract class PerCollectionSizeTestSuiteBuilder<

    suite.addTestSuite(MutableClassToInstanceMapTest.class);

    suite.addTest(
        MapTestSuiteBuilder.using(
                new TestClassToInstanceMapGenerator() {
                  // Other tests will verify what real, warning-free usage looks like
                  // but here we have to do some serious fudging
                  @Override
                  @SuppressWarnings({"unchecked", "rawtypes"})

          @Override
          public Class<?> loadClass(String name) throws ClassNotFoundException {
            if (name.startsWith(concurrentPackage)
                // Use other classloader for ListenableFuture, so that the objects can interact
                && !ListenableFuture.class.getName().equals(name)) {
              synchronized (loadedClasses) {

     * If null, all available web configurations will be crawled (when no other config IDs are specified).
     */
    protected String[] webConfigIds;

    /**
     * Array of file system crawling configuration IDs to process.
     * If null, all available file configurations will be crawled (when no other config IDs are specified).
     */
    protected String[] fileConfigIds;

    /**

   *
   * @param array a <i>nonempty</i> array of unsigned {@code int} values
   * @return the value present in {@code array} that is less than or equal to every other value in
   *     the array according to {@link #compare}
   * @throws IllegalArgumentException if {@code array} is empty
   */
  public static int min(int... array) {
    checkArgument(array.length > 0);

 *
 * <p>This class is emulated in GWT.
 *
 * @param <G> the type of the test generator required by this tester. An instance of G should
 *     somehow provide an instance of the class under test, plus any other information required to
 *     parameterize the test.
 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public class AbstractTester<G> extends TestCase {
  private G subjectGenerator;

    /**
     * Two instances are considered equal if their {@link #leftValue()} values are equal and their
     * {@link #rightValue()} values are also equal.
     */
    @Override
    boolean equals(@Nullable Object other);

    /**
     * The hash code equals the value {@code Arrays.asList(leftValue(), rightValue()).hashCode()}.
     */
    @Override
    int hashCode();
  }