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import org.eclipse.aether.RepositoryCache;
import org.eclipse.aether.repository.WorkspaceReader;
import org.eclipse.aether.transfer.TransferListener;

/**
 */
public class DefaultMavenExecutionRequest implements MavenExecutionRequest {

    private RepositoryCache repositoryCache = new DefaultRepositoryCache();

    private WorkspaceReader workspaceReader;

    private ArtifactRepository localRepository;

   *
   * <p>This class is accessible but not supported in GWT as it references {@link
   * PermittedMetaException}.
   */
  protected final class MultiExceptionListIterator implements ListIterator<E> {
    // TODO: track seen elements when order isn't guaranteed
    // TODO: verify contents afterward
    // TODO: something shiny and new instead of Stack

 * @author Kevin Bourrillion
 * @since 10.0
 */
@DoNotMock("Use Optional.of(value) or Optional.absent()")
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
public abstract class Optional<T> implements Serializable {
  /**
   * Returns an {@code Optional} instance with no contained reference.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method is equivalent to Java 8's
   * {@code Optional.empty}.

@GwtCompatible(serializable = true, emulated = true)
@SuppressWarnings("serial") // we're overriding default serialization
@ElementTypesAreNonnullByDefault
public abstract class ImmutableList<E> extends ImmutableCollection<E>
    implements List<E>, RandomAccess {

  /**
   * Returns a {@code Collector} that accumulates the input elements into a new {@code
   * ImmutableList}, in encounter order.
   *
   * @since 21.0
   */

 * convenient shortcut methods defined directly on {@link HashFunction} to make this easier.
 *
 * <p>Hasher accepts primitive data types, but can also accept any Object of type {@code T} provided
 * that you implement a {@link Funnel}{@code <T>} to specify how to "feed" data from that object
 * into the function. (See {@linkplain Hasher#putObject an example} of this.)
 *

 * convenient shortcut methods defined directly on {@link HashFunction} to make this easier.
 *
 * <p>Hasher accepts primitive data types, but can also accept any Object of type {@code T} provided
 * that you implement a {@link Funnel}{@code <T>} to specify how to "feed" data from that object
 * into the function. (See {@linkplain Hasher#putObject an example} of this.)
 *

// TODO remove hardcoding of checksum logic

/**
 * Manages <a href="https://maven.apache.org/wagon">Wagon</a> related operations in Maven.
 */
@Named
@Singleton
@Deprecated
public class DefaultWagonManager implements WagonManager {

    private static final String[] CHECKSUM_IDS = {"md5", "sha1"};

    /**
     * have to match the CHECKSUM_IDS
     */
    private static final String[] CHECKSUM_ALGORITHMS = {"MD5", "SHA-1"};

//	suffix := "config.json"
//	result is foo
func extractPathPrefixAndSuffix(s string, prefix string, suffix string) string {
	return pathClean(strings.TrimSuffix(strings.TrimPrefix(s, prefix), suffix))
}

// IAMEtcdStore implements IAMStorageAPI
type IAMEtcdStore struct {
	sync.RWMutex

	*iamCache

	usersSysType UsersSysType

	client *etcd.Client
}

            return visitor.getCount();
        } catch (final Exception e) {
            throw new JobProcessingException(e);
        }
    }

    protected static class FilePurgeVisitor implements FileVisitor<Path> {

        protected final long expiry;

        protected long count;

        protected final int maxPurgeSize;