*   holdsLock assertions.
   *
   * - For stream() and spliterator(), we have to forward to the delegate ourselves because
   *   ForwardingSet does not forward `default` methods, as discussed in its Javadoc.
   */

  @Override
  public Stream<E> stream() {
    return delegate.stream();
  }

  @Override
  public Spliterator<E> spliterator() {
    return delegate.spliterator();
  }

            task.getLinksFile().convention(dslDocbook.flatMap(AssembleDslDocTask::getLinksFile));

            task.getDsldocUrl().convention("../dsl");
            task.getJavadocUrl().convention("../javadoc");
            task.getWebsiteUrl().convention("https://gradle.org");

            task.getDestFile().convention(dslReference.getStagingRoot().file("index.xml"));
        });

            Element ulinkElement = doc.createElement('ulink')

            String href
            if (style == 'dsldoc') {
                href = "${dsldocUrl.get()}/${className}.html"
            } else if (style == "javadoc") {
                def base = javadocUrl.get()
                def packageName = classMetaData.packageName
                href = "$base/${packageName.replace('.', '/')}/${className.substring(packageName.length()+1)}.html"

    private String getGradleProjectPathFor(Version version) {
        // We have Gradle projects set up to check out and build unreleased versions based on the our branching
        // conventions described in this classes javadoc
        if (version.equals(currentVersion)) {
            return ":distribution";
        }

        Map<Integer, List<Version>> releasedMajorGroupedByMinor = getReleasedMajorGroupedByMinor();

  }

  @Override
  Collection<V> wrapCollection(@ParametricNullness K key, Collection<V> collection) {
    return new WrappedSet(key, (Set<V>) collection);
  }

  // Following Javadoc copied from SetMultimap.

  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a

  }

  @Override
  Collection<V> wrapCollection(@ParametricNullness K key, Collection<V> collection) {
    return new WrappedSet(key, (Set<V>) collection);
  }

  // Following Javadoc copied from SetMultimap.

  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a

        validPluginCounts.put(testPluginArtifactId, 0);

        // these are injected if -DperformRelease=true
        validPluginCounts.put("maven-deploy-plugin", 0);
        validPluginCounts.put("maven-javadoc-plugin", 0);
        validPluginCounts.put("maven-source-plugin", 0);

        Plugin testPlugin = null;

        for (Plugin plugin : plugins) {
            String pluginArtifactId = plugin.getArtifactId();

      return new WrappedNavigableSet(key, (NavigableSet<V>) collection, null);
    } else {
      return new WrappedSortedSet(key, (SortedSet<V>) collection, null);
    }
  }

  // Following Javadoc copied from Multimap and SortedSetMultimap.

  /**
   * Returns a collection view of all values associated with a key. If no mappings in the multimap
   * have the provided key, an empty collection is returned.
   *

 */
package gradlebuild.docs.dsl.docbook;

import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.regex.Pattern;

/**
 * Converts the main description of a javadoc comment into a stream of tokens.
 */
class BasicJavadocLexer implements JavadocLexer {
    private static final Pattern HTML_ELEMENT = Pattern.compile("(?s)<\\\\?[^<]+?>");

      return new WrappedNavigableSet(key, (NavigableSet<V>) collection, null);
    } else {
      return new WrappedSortedSet(key, (SortedSet<V>) collection, null);
    }
  }

  // Following Javadoc copied from Multimap and SortedSetMultimap.

  /**
   * Returns a collection view of all values associated with a key. If no mappings in the multimap
   * have the provided key, an empty collection is returned.
   *