}

  @Override
  public @Nullable V get(@Nullable Object key) {
    return RegularImmutableMap.get(key, keyTable, mask);
  }

  @Override
  ImmutableSet<Entry<K, V>> createEntrySet() {
    return isEmpty()
        ? ImmutableSet.of()
        : new ImmutableMapEntrySet.RegularEntrySet<K, V>(this, entries);
  }

  @Override
  ImmutableSet<K> createKeySet() {
    return new ImmutableMapKeySet<>(this);
  }

                }
            }
        }

        metadata.getVersioning().setSnapshotVersions(new ArrayList<>(versions.values()));

        // just carry-on as-is
        if (!recessive.getPlugins().isEmpty()) {
            metadata.setPlugins(new ArrayList<>(recessive.getPlugins()));
        }

        artifacts.clear();
    }

    private String getKey(String classifier, String extension) {

    List<String> transformedList = transform(SOME_LIST, SOME_FUNCTION);
    assertFalse(transformedList.isEmpty());
  }

  public void testTransformSequentialIsNotEmpty() {
    List<String> transformedList = transform(SOME_SEQUENTIAL_LIST, SOME_FUNCTION);
    assertFalse(transformedList.isEmpty());
  }

  public void testTransformListIteratorRandomAccess() {

    public static MavenOptions layerMavenOptions(Collection<MavenOptions> options) {
        List<MavenOptions> o = options.stream().filter(Objects::nonNull).toList();
        if (o.isEmpty()) {
            throw new IllegalArgumentException("No options specified (or all were null)");
        } else if (o.size() == 1) {
            return o.get(0);
        } else {

        List<Expression> expressions = documentation.getExpressions();

        Map<String, Expression> bySyntax = new HashMap<>();

        if (expressions != null && !expressions.isEmpty()) {
            for (Expression expression : expressions) {
                bySyntax.put(expression.getSyntax(), expression);
            }
        }

        return bySyntax;
    }

    Multiset<K> keys = multimap().keys();
    Iterator<Multiset.Entry<K>> itr = keys.entrySet().iterator();
    assertEquals(Multisets.immutableEntry(k0(), 1), itr.next());
    itr.remove();
    assertTrue(multimap().isEmpty());
  }

  @CollectionSize.Require(SEVERAL)
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testKeysEntrySetRemove() {
    resetContainer(mapEntry(k0(), v0()), mapEntry(k0(), v1()), mapEntry(k1(), v0()));

                }
            }
        }

        metadata.getVersioning().setSnapshotVersions(new ArrayList<>(versions.values()));

        // just carry-on as-is
        if (!recessive.getPlugins().isEmpty()) {
            metadata.setPlugins(new ArrayList<>(recessive.getPlugins()));
        }
    }

    private static int getBuildNumber(Metadata metadata) {
        int number = 0;

    }

    protected void mergeModelBase_Modules(
            ModelBase target, ModelBase source, boolean sourceDominant, Map<Object, Object> context) {
        List<String> src = source.getModules();
        if (!src.isEmpty()) {
            List<String> tgt = target.getModules();
            List<String> merged = new ArrayList<>(tgt.size() + src.size());
            merged.addAll(tgt);
            merged.addAll(src);

            if (!safe) {
                throw e;
            }
        }
    }

    private boolean isSpecificVersion(String version) {
        return !((version == null || version.isEmpty()) || version.startsWith("[") || version.startsWith("("));
    }

    // TODO !![jc; 28-jul-2005] check this; if we're using '-r' and there are aggregator tasks, this will result in
    // weirdness.

public class MapClearTester<K, V> extends AbstractMapTester<K, V> {
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    getMap().clear();
    assertTrue("After clear(), a map should be empty.", getMap().isEmpty());
    assertEquals(0, getMap().size());
    assertFalse(getMap().entrySet().iterator().hasNext());
  }

  @MapFeature.Require({FAILS_FAST_ON_CONCURRENT_MODIFICATION, SUPPORTS_REMOVE})
  @CollectionSize.Require(SEVERAL)