*
 * @author Louis Wasserman
 */
@GwtCompatible
class FilteredKeyMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimap<K, V> implements FilteredMultimap<K, V> {
  final Multimap<K, V> unfiltered;
  final Predicate<? super K> keyPredicate;

  FilteredKeyMultimap(Multimap<K, V> unfiltered, Predicate<? super K> keyPredicate) {

      }
    };
  }

  private static final ImmutableMultiset<String> ELEMENTS_TO_FILTER_OUT =
      ImmutableMultiset.of("foobar", "bazfoo", "foobar", "foobar");

  private static final Predicate<String> PREDICATE = not(Predicates.in(ELEMENTS_TO_FILTER_OUT));

  private static TestStringMultisetGenerator filteredGenerator() {
    return new TestStringMultisetGenerator() {
      @Override

                    projectsInRequestScope.add(requestPomProject);

                    Predicate<ProjectBuildingResult> projectsOutsideOfRequestScope =
                            pr -> !projectsInRequestScope.contains(pr.getProject());

                    Predicate<Exception> pluginArtifactNotFoundException = exc -> exc instanceof PluginManagerException

         * The result will contain only the paths of types for which the predicate returned {@code true}.
         * It is recommended to apply a filter for retaining only the types of paths of interest,
         * because it can resolve ambiguities when a path could be of many types.
         *
         * @param pathTypeFilter predicate evaluating whether a path type should be included in the result

  @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);
  }

      Class<T> expectedThrowable, ThrowingSupplier supplier, boolean userPassedSupplier) {
    checkNotNull(expectedThrowable);
    checkNotNull(supplier);
    Predicate<Throwable> predicate = INSTANCE_OF.get(expectedThrowable);
    if (predicate == null) {
      throw new IllegalArgumentException(
          expectedThrowable
              + " is not yet supported by ReflectionFreeAssertThrows. Add an entry for it in the"

      Class<T> expectedThrowable, ThrowingSupplier supplier, boolean userPassedSupplier) {
    checkNotNull(expectedThrowable);
    checkNotNull(supplier);
    Predicate<Throwable> predicate = INSTANCE_OF.get(expectedThrowable);
    if (predicate == null) {
      throw new IllegalArgumentException(
          expectedThrowable
              + " is not yet supported by ReflectionFreeAssertThrows. Add an entry for it in the"

      Class<T> expectedThrowable, ThrowingSupplier supplier, boolean userPassedSupplier) {
    checkNotNull(expectedThrowable);
    checkNotNull(supplier);
    Predicate<Throwable> predicate = INSTANCE_OF.get(expectedThrowable);
    if (predicate == null) {
      throw new IllegalArgumentException(
          expectedThrowable
              + " is not yet supported by ReflectionFreeAssertThrows. Add an entry for it in the"

    }
  }

  static final Predicate<String> FILTER_KEYS =
      new Predicate<String>() {
        @Override
        public boolean apply(@Nullable String string) {
          return !Objects.equals(string, "banana") && !Objects.equals(string, "eggplant");
        }
      };

  static final Predicate<String> FILTER_VALUES =
      new Predicate<String>() {
        @Override

  }

  /**
   * Waits until the given predicate returns true, invoking the garbage collector as necessary to
   * try to ensure that this will happen.
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   */
  @SuppressWarnings("removal") // b/260137033
  public static void awaitDone(FinalizationPredicate predicate) {
    if (predicate.isDone()) {
      return;
    }