ExtensionDescriptor extensionDescriptor = null;

        if (extensionJar.isFile()) {
            try (JarFile pluginJar = new JarFile(extensionJar, false)) {
                ZipEntry pluginDescriptorEntry = pluginJar.getEntry(getExtensionDescriptorLocation());

                if (pluginDescriptorEntry != null) {
                    try (InputStream is = pluginJar.getInputStream(pluginDescriptorEntry)) {

    @Override
    @GwtIncompatible
    @J2ktIncompatible
        Object writeReplace() {
      return super.writeReplace();
    }
  }

  @Override
  Entry<E> getEntry(int index) {
    return contents.getEntry(index);
  }

  @GwtIncompatible
  private static class SerializedForm implements Serializable {
    final Object[] elements;
    final int[] counts;

      for (int i = 0; i < SMALL_MAX_SIZE; i++) {
        Object key = new Object();
        int hash = map.hash(key);

        map.get(key, loader);
        ReferenceEntry<Object, Object> entry = segment.getEntry(key, hash);
        writeOrder.add(entry);
        readOrder.add(entry);
      }

      checkEvictionQueues(map, segment, readOrder, writeOrder);
      checkExpirationTimes(map);

      for (int i = 0; i < SMALL_MAX_SIZE; i++) {
        Object key = new Object();
        int hash = map.hash(key);

        map.get(key, loader);
        ReferenceEntry<Object, Object> entry = segment.getEntry(key, hash);
        writeOrder.add(entry);
        readOrder.add(entry);
      }

      checkEvictionQueues(map, segment, readOrder, writeOrder);
      checkExpirationTimes(map);

  public int count(@Nullable Object element) {
    throw new AssertionError();
  }

  @Override
  public ImmutableSet<E> elementSet() {
    throw new AssertionError();
  }

  @Override
  Entry<E> getEntry(int index) {
    throw new AssertionError();
  }

  @Override
  boolean isPartialView() {
    throw new AssertionError();
  }

  @Override
  public int size() {
    throw new AssertionError();
  }

     * @param scope - which classpath to extract
     * @param resolve - whether to resolve artifacts.
     * @return Collection of metadata objects in the linked subgraph of the graph which
     *             contains the graph.getEntry() vertice
     */
    ClasspathContainer transform(MetadataGraph dirtyGraph, ArtifactScopeEnum scope, boolean resolve)
            throws MetadataGraphTransformationException;

      return getKey().upperBound;
    }
  }

  @Override
  public @Nullable V get(K key) {
    Entry<Range<K>, V> entry = getEntry(key);
    return (entry == null) ? null : entry.getValue();
  }

  @Override
  public @Nullable Entry<Range<K>, V> getEntry(K key) {
    Entry<Cut<K>, RangeMapEntry<K, V>> mapEntry =
        entriesByLowerBound.floorEntry(Cut.belowValue(key));

      while (true) {
        // trying to read the canonical...
        @SuppressWarnings("rawtypes") // using raw types to avoid a bug in our nullness checker :(
        InternalEntry entry = map.getEntry(sample);
        if (entry != null) {
          Object canonical = entry.getKey();
          if (canonical != null) { // only matters if weak/soft keys are used

            }
        }

        MetadataGraphNode node = new MetadataGraphNode(md);
        addNode(node);
        return node;
    }

    /**
     * getter
     */
    public MetadataGraphNode getEntry() {
        return entry;
    }

    /**
     * getter
     */
    public Collection<MetadataGraphNode> getNodes() {
        return nodes;
    }

    assertEquals(1, segment.count);
    assertSame(newValue, segment.get(key, hash));

    // cleared
    InternalEntry<Object, Object, ?> entry = segment.getEntry(key, hash);
    WeakValueReference<Object, Object, ?> oldValueRef =
        segment.newWeakValueReferenceForTesting(entry, oldValue);
    segment.setWeakValueReferenceForTesting(entry, oldValueRef);