}

  /**
   * Returns an array containing all of the elements in this queue, in proper sequence.
   *
   * <p>The returned array will be "safe" in that no references to it are maintained by this queue.
   * (In other words, this method must allocate a new array). The caller is thus free to modify the
   * returned array.
   *
   * <p>This method acts as bridge between array-based and collection-based APIs.
   *

   * int} values are boxed into {@link Integer} instances on demand, which can be very expensive.
   * The returned list should be used once and discarded. For any usages beyond that, pass the
   * returned list to {@link com.google.common.collect.ImmutableList#copyOf(Collection)
   * ImmutableList.copyOf} and use that list instead.
   */
  public List<Integer> asList() {
    /*

@Deprecated
public interface ArtifactMetadataSource extends org.apache.maven.repository.legacy.metadata.ArtifactMetadataSource {

    @Override
    ResolutionGroup retrieve(MetadataResolutionRequest request) throws ArtifactMetadataRetrievalException;

    @Override
    ResolutionGroup retrieve(
            Artifact artifact, ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories)
            throws ArtifactMetadataRetrievalException;

     * - Downloaded artifacts
     */
    PERSISTENT,

    /**
     * Data should be retained for the duration of the current Maven session.
     * Suitable for:
     * - Build-wide configuration
     * - Project model caching
     * - Inter-module metadata
     */
    SESSION_SCOPED,

    /**
     * Data should only be retained for the current build request.
     * Suitable for:
     * - Plugin execution results

  /**
   * Returns a timeout that spans the entire call: resolving DNS, connecting, writing the request
   * body, server processing, and reading the response body. If the call requires redirects or
   * retries all must complete within one timeout period.
   *
   * Configure the client's default timeout with [OkHttpClient.Builder.callTimeout].
   */
  fun timeout(): Timeout

  /**

   */
  Range<C> span();

  // Views

  /**
   * Returns a view of the {@linkplain Range#isConnected disconnected} ranges that make up this
   * range set. The returned set may be empty. The iterators returned by its {@link
   * Iterable#iterator} method return the ranges in increasing order of lower bound (equivalently,
   * of upper bound).
   */
  Set<Range<C>> asRanges();

  /**

    // TODO: test whether null is supported (create a Feature)
    /**
     * The elements to be returned by future calls to {@code next()}, with the first at the top of
     * the stack.
     */
    final Stack<E> nextElements = new Stack<>();

    /**
     * The elements to be returned by future calls to {@code previous()}, with the first at the top
     * of the stack.
     */

 * ```
 *
 * ## What's in a URL?
 *
 * A URL has several components.
 *
 * ### Scheme
 *
 * Sometimes referred to as *protocol*, A URL's scheme describes what mechanism should be used to
 * retrieve the resource. Although URLs have many schemes (`mailto`, `file`, `ftp`), this class only
 * supports `http` and `https`. Use [java.net.URI][URI] for URLs with arbitrary schemes.
 *
 * ### Username and Password
 *

        // ensure the method returns 8 as claimed
        byte[] buf = new byte[12];
        buf[0] = 0x00;
        buf[1] = 0x10; // count = 4096 in little-endian (0x1000)
        int returned = resp.readParameterWordsWireFormat(buf, 0);
        assertEquals(8, returned, "Method should return 8 bytes processed");
    }

   * the capacity, it is doubled in size unless some other thread
   * holds the lock. If a hashed slot is empty, and lock is
   * available, a new Cell is created. Otherwise, if the slot
   * exists, a CAS is tried.  Retries proceed by "double hashing",
   * using a secondary hash (Marsaglia XorShift) to try to find a
   * free slot.
   *
   * The table size is capped because, when there are more threads