return Optional.of(new DefaultPackaging(id, type, getPlugins(lifecycleMapping)));
    }

    private Map<String, PluginContainer> getPlugins(LifecycleMapping lifecycleMapping) {
        Map<String, PluginContainer> lfs = new HashMap<>();
        lifecycleMapping.getLifecycles().forEach((id, lifecycle) -> {
            Map<String, Plugin> plugins = new HashMap<>();
            lifecycle
                    .getLifecyclePhases()

   */
  private transient long size;

  /** Standard constructor. */
  protected AbstractMapBasedMultiset(Map<E, Count> backingMap) {
    checkArgument(backingMap.isEmpty());
    this.backingMap = backingMap;
  }

  /** Used during deserialization only. The backing map must be empty. */
  void setBackingMap(Map<E, Count> backingMap) {
    this.backingMap = backingMap;
  }

  // Required Implementations

  /**

  protected final void assertMoreInvariants(Map<K, V> map) {
    // TODO: can these be moved to MapInterfaceTest?
    for (Entry<K, V> entry : map.entrySet()) {
      assertThat(entry.toString()).isEqualTo(entry.getKey() + "=" + entry.getValue());
    }

    assertThat(map.toString()).isEqualTo("{" + JOINER.join(map.entrySet()) + "}");
    assertThat(map.entrySet().toString()).isEqualTo("[" + JOINER.join(map.entrySet()) + "]");

import static org.codelibs.core.collection.Maps.map;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.util.Map;

import org.junit.Test;

/**
 * @author koichik
 */
public class MapsTest {

    /**
     * @throws Exception
     */
    @Test
    public void test() throws Exception {
        final Map<String, Integer> map = map("a", 1).$("b", 2).$("c", 3).$();

     * Returns a map of POM path to the set of plugin keys that need management.
     */
    private Map<Path, Set<String>> analyzePluginsUsingEffectiveModels(
            UpgradeContext context, Map<Path, Document> pomMap, Path tempDir) {
        Map<Path, Set<String>> result = new HashMap<>();
        Map<String, PluginUpgrade> pluginUpgrades = getPluginUpgradesAsMap();

        }

        @Override
        public String getQuery() {
            return null;
        }

        @Override
        public Map<String, String[]> getFields() {
            return null;
        }

        @Override
        public Map<String, String[]> getConditions() {
            return null;
        }

        @Override
        public String[] getLanguages() {

    table.put("z", 1, 'a');
    return table;
  }

  @Override
  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    TreeBasedTable<String, Integer, Character> table = makeTable();
    populateTable(table);
    return table.rowMap().subMap("b", "x");
  }

  @Override
  protected Map<String, Map<Integer, Character>> makeEmptyMap() {
    return makeTable().rowMap().subMap("b", "x");
  }

 */
public interface DocumentReader extends Closeable {
    /**
     * Reads a document and returns its contents as a map.
     *
     * @return a map containing the document's data, or null if there are no more documents to read.
     */
    Map<String, Object> read();

    @Override
    void close();

    private static final long serialVersionUID = 1L;

    /**
     * The internal LRU hash map used to store elements.
     */
    private final LruHashMap<E, Object> map;

    // Dummy value to associate with an Object in the backing Map
    private static final Object PRESENT = new Object();

    /**
     * Creates a new {@link LruHashSet} with the specified limit size.
     *

    }

    protected Optional<Map<String, String>> collectMapIfPresentOrEmpty(
            Function<O, Optional<Map<String, String>>> getter) {
        int had = 0;
        HashMap<String, String> items = new HashMap<>();
        for (O option : options) {
            Optional<Map<String, String>> up = getter.apply(option);
            if (up.isPresent()) {
                had++;