* <? extends Object> is mostly the same as <?> to plain Java. But to nullness checkers, they
   * differ: <? extends Object> means "non-null types," while <?> means "all types."
   */
  ImmutableMap<K, V> getAllPresent(Iterable<? extends Object> keys);

  /**
   * Associates {@code value} with {@code key} in this cache. If the cache previously contained a
   * value associated with {@code key}, the old value is replaced by {@code value}.
   *

    assertEquals(STR_VAL, STR_TO_LONG.reverse().convert(LONG_VAL));

    Iterable<Long> convertedValues = STR_TO_LONG.convertAll(STRINGS);
    assertEquals(LONGS, ImmutableList.copyOf(convertedValues));
  }

  public void testConvertAllIsView() {
    List<String> mutableList = Lists.newArrayList("789", "123");
    Iterable<Long> convertedValues = STR_TO_LONG.convertAll(mutableList);

import java.util.Set;
import org.jspecify.annotations.NullUnmarked;

@NullUnmarked
public final class SetsFilterHashSetTest extends AbstractFilteredSetTest<Set<Integer>> {
  @Override
  Set<Integer> createUnfiltered(Iterable<Integer> contents) {
    return newHashSet(contents);
  }

  @Override
  Set<Integer> filter(Set<Integer> elements, Predicate<? super Integer> predicate) {
    return Sets.filter(elements, predicate);
  }

  static final LegacyComparable Y = new LegacyComparable("y");
  static final LegacyComparable Z = new LegacyComparable("z");

  static final Iterable<LegacyComparable> VALUES_FORWARD = asList(X, Y, Z);
  static final Iterable<LegacyComparable> VALUES_BACKWARD = asList(Z, Y, X);

  private final String value;

  LegacyComparable(String value) {
    this.value = value;
  }

  @Override

   */
  protected abstract T create(UnhashableObject[] elements);

  @Override
  public UnhashableObject[] createArray(int length) {
    return new UnhashableObject[length];
  }

  @Override
  public Iterable<UnhashableObject> order(List<UnhashableObject> insertionOrder) {
    return insertionOrder;
  }

        return propertyDescCache.getAt(index);
    }

    @Override
    public int getPropertyDescSize() {
        return propertyDescCache.size();
    }

    @Override
    public Iterable<PropertyDesc> getPropertyDescs() {
        return unmodifiableCollection(propertyDescCache.values());
    }

    @Override
    public boolean hasFieldDesc(final String fieldName) {

   * throws a {@link NullPointerException}.
   *
   * <p>To find the first non-null element in an iterable, use {@code Iterables.find(iterable,
   * Predicates.notNull())}. For varargs, use {@code Iterables.find(Arrays.asList(a, b, c, ...),
   * Predicates.notNull())}, static importing as necessary.
   *

     * @since 19.0
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> putAll(Iterable<? extends Entry<? extends K, ? extends V>> entries) {
      super.putAll(entries);
      return this;
    }

    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> putAll(K key, Iterable<? extends V> values) {
      super.putAll(key, values);
      return this;
    }

  }

  @Override
  public SampleElements<String> sampleValues() {
    return new SampleElements<>("January", "February", "March", "April", "May");
  }

  @Override
  public Collection<String> createCollection(Iterable<? extends String> values) {
    return copyToList(values);
  }

  @Override
  public final ListMultimap<String, String> create(Object... entries) {
    @SuppressWarnings("unchecked")

  K[] createKeyArray(int length);

  V[] createValueArray(int length);

  SampleElements<K> sampleKeys();

  SampleElements<V> sampleValues();

  Collection<V> createCollection(Iterable<? extends V> values);