// K must actually be K0, since enums are effectively final
        // (their subclasses are inaccessible)
        return (Map<K, Collection<V>>) new EnumMap<K0, Collection<V>>(keyClass);
      }
    };
  }

  private static final class ArrayListSupplier<V extends @Nullable Object>
      implements Supplier<List<V>>, Serializable {
    private final int expectedValuesPerKey;

/**
 * Handles failover and recovery for multi-channel connections
 */
public class ChannelFailover {

    private static final Logger log = LoggerFactory.getLogger(ChannelFailover.class);

    private final ChannelManager manager;
    private final ExecutorService executor;
    private final ConcurrentMap<String, FailoverState> failoverStates;

    /**
     * Create channel failover handler
     *

   * forwards the calls to the underlying {@code Map}.
   */
  private static class CheckSetUpInvocationHandler implements InvocationHandler, Serializable {
    private final Map<String, String> map;
    private final AtomicBoolean setUpRan;

    CheckSetUpInvocationHandler(Map<String, String> map, AtomicBoolean setUpRan) {
      this.map = map;
      this.setUpRan = setUpRan;
    }

    @Override

 * </pre>
 *
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible
@NullMarked
public class TestLogHandler extends Handler {
  private final Object lock = new Object();

  /** We will keep a private list of all logged records */
  @GuardedBy("lock")
  private final List<LogRecord> list = new ArrayList<>();

  /** Adds the most recently logged record to our list. */
  @Override

     * carried exit code will be returned from invoker {@link Invoker#invoke(InvokerRequest)} method.
     */
    public static final class ExitException extends InvokerException {
        private final int exitCode;

        public ExitException(int exitCode) {
            super("EXIT=" + exitCode);
            this.exitCode = exitCode;
        }

 *
 * @since 3.9.1
 */
@Singleton
@Named
class DeprecatedCoreExpressionValidator extends AbstractMavenPluginParametersValidator {
    private static final HashMap<String, String> DEPRECATED_CORE_PARAMETERS;

    private static final String ARTIFACT_REPOSITORY_REASON =
            "ArtifactRepository type is deprecated and its use in Mojos should be avoided.";

    static {

 * limitations under the License.
 */
package gradlebuild.docs.dsl.source.model

import spock.lang.Specification

class PropertyMetaDataTest extends Specification {
    final ClassMetaData classMetaData = Mock()
    final PropertyMetaData propertyMetaData = new PropertyMetaData('prop', classMetaData)

    def formatsSignature() {
        def type = new TypeMetaData('org.gradle.SomeClass')

    /**
     * @throws Exception
     */
    @Test
    public void testIsEqualsMethod() throws Exception {
        final Method equalsMethod = ClassUtil.getMethod(getClass(), "equals", Object.class);
        assertThat(MethodUtil.isEqualsMethod(equalsMethod), is(true));
        final Method hashCodeMethod = ClassUtil.getMethod(getClass(), "hashCode");
        assertThat(MethodUtil.isEqualsMethod(hashCodeMethod), is(not(true)));
    }

 * See {@link MultiEdgesConnecting} for a class that works with parallel edges.
 *
 * @author James Sexton
 * @param <E> Edge parameter type
 */
final class EdgesConnecting<E> extends AbstractSet<E> {

  private final Map<?, E> nodeToOutEdge;
  private final Object targetNode;

  EdgesConnecting(Map<?, E> nodeToEdgeMap, Object targetNode) {
    this.nodeToOutEdge = checkNotNull(nodeToEdgeMap);

      CollectorTester<T, A, R> of(
          Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    return new CollectorTester<>(collector, equivalence);
  }

  private final Collector<T, A, R> collector;
  private final BiPredicate<? super R, ? super R> equivalence;

  private CollectorTester(
      Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    this.collector = checkNotNull(collector);