protected Collection<Method> suppressForSingletonSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForHashSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForLinkedHashSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForEnumSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForSynchronizedNavigableSet() {

  @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
   * {@link Set}, instead of the {@link Collection} specified in the {@link Multimap} interface.
   */
  @Override

  @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
   * {@link Set}, instead of the {@link Collection} specified in the {@link Multimap} interface.
   */
  @Override

 */
package org.codelibs.fess.crawler.extractor.impl;

import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.misc.Pair;

      @Override
      <K extends @Nullable Object, V extends @Nullable Object> Map<K, Collection<V>> createMap() {
        return Platform.newHashMapWithExpectedSize(expectedKeys);
      }
    };
  }

  /**
   * Uses a hash table to map keys to value collections.
   *
   * <p>The collections returned by {@link Multimap#keySet()}, {@link Multimap#keys()}, and {@link

        RequestType requestType;
        Project project;
        Artifact rootArtifact;
        DependencyCoordinates root;
        List<DependencyCoordinates> dependencies = Collections.emptyList();
        List<DependencyCoordinates> managedDependencies = Collections.emptyList();
        boolean verbose;
        PathScope pathScope;
        Predicate<PathType> pathTypeFilter;
        List<RemoteRepository> repositories;

            para.appendChild(doc.createTextNode(String.format(" added by the %s plugin.", extensionDoc.getPluginId())));

            PropertyDoc propertyDoc = new PropertyDoc(propertyMetaData, Collections.singletonList(para), Collections.<ExtraAttributeDoc>emptyList());
            extensionDoc.getExtraProperties().add(propertyDoc);

            para = doc.createElement("para");

                }
                snapshotMetadata.bind(artifact);
            }
        }

        return Collections.emptyList();
    }

    @Override
    public Artifact transformArtifact(Artifact artifact) {
        return artifact;
    }

    @Override
    public Collection<? extends Metadata> finish(Collection<? extends Artifact> artifacts) {
        return snapshots.values();
    }

        return Collections.unmodifiableCollection(attached);
    }

    @Override
    public Collection<ProducedArtifact> getAllArtifacts(Project project) {
        ArrayList<ProducedArtifact> result = new ArrayList<>(2);
        result.addAll(project.getArtifacts());
        result.addAll(getAttachedArtifacts(project));
        return Collections.unmodifiableCollection(result);
    }

    @Override

        list.add(text);
    }

    public List<String> getDefaultKeyword() {
        if (fieldLogMap != null) {
            return fieldLogMap.getOrDefault(Constants.DEFAULT_FIELD, Collections.emptyList());
        }
        return Collections.emptyList();
    }

    public void addHighlightedQuery(final String text) {
        if (highlightedQuerySet != null) {
            highlightedQuerySet.add(text);
        }