unfiltered.put("horse", 5);
    Predicate<Entry<?, ?>> predicate =
        new Predicate<Entry<?, ?>>() {
          @Override
          public boolean apply(Entry<?, ?> input) {
            return "cat".equals(input.getKey()) || Integer.valueOf(2) == input.getValue();
          }
        };
    Map<String, Integer> filtered = Maps.filterEntries(unfiltered, predicate);

    final Collection<E> unfiltered;
    final Predicate<? super E> predicate;

    FilteredCollection(Collection<E> unfiltered, Predicate<? super E> predicate) {
      this.unfiltered = unfiltered;
      this.predicate = predicate;
    }

    FilteredCollection<E> createCombined(Predicate<? super E> newPredicate) {
      return new FilteredCollection<>(unfiltered, Predicates.and(predicate, newPredicate));
    }

    @Override

        if (id == null) {
            return Optional.empty();
        }
        if (predicate.test(id)) {
            return Optional.of(id);
        }
        return findClosestMatchingAncestor(parents.get(id), predicate);
    }

    @Override

    final Collection<E> unfiltered;
    final Predicate<? super E> predicate;

    FilteredCollection(Collection<E> unfiltered, Predicate<? super E> predicate) {
      this.unfiltered = unfiltered;
      this.predicate = predicate;
    }

    FilteredCollection<E> createCombined(Predicate<? super E> newPredicate) {
      return new FilteredCollection<>(unfiltered, Predicates.and(predicate, newPredicate));
    }

    @Override

    }
    return Iterators.removeIf(removeFrom.iterator(), predicate);
  }

  /** Removes and returns the first matching element, or returns {@code null} if there is none. */
  @CheckForNull
  static <T extends @Nullable Object> T removeFirstMatching(
      Iterable<T> removeFrom, Predicate<? super T> predicate) {
    checkNotNull(predicate);

    }

    private Stream<ProjectActivationSettings> getProjects(final Predicate<ActivationSettings> predicate) {
        return this.activations.stream().filter(activation -> predicate.test(activation.activationSettings));
    }

    private Set<String> getProjectSelectors(final Predicate<ActivationSettings> predicate) {
        return getProjects(predicate).map(activation -> activation.selector).collect(toSet());
    }

    /**

  public void testRemoveIf_unsupportedEmptyCollection() {
    try {
      assertFalse(
          "removeIf(Predicate) should return false or throw " + "UnsupportedOperationException",
          collection.removeIf(
              x -> {
                throw new AssertionError("predicate should never be called");
              }));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();

    }
  }

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

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

      Predicate<T> predicate) {
    return new PredicateFunction<>(predicate);
  }

  /** @see Functions#forPredicate */
  private static class PredicateFunction<T extends @Nullable Object>
      implements Function<T, Boolean>, Serializable {
    private final Predicate<T> predicate;

    private PredicateFunction(Predicate<T> predicate) {
      this.predicate = checkNotNull(predicate);
    }

    @Override

// all allowed arguments types
def TFR_allowedArgType : Type<Or<[
    TFR_AllTensorTypes.predicate,
    TFR_AllAttrTypes.predicate]>, "allowed tfr.call operand types">;

def TFR_allowedConstValues : Attr<Or<[
    FlatSymbolRefAttr.predicate,
    TypeAttr.predicate,
    StrAttr.predicate,
    ArrayAttr.predicate]>, "allowed tfr.constant value"> {
  let storageType = "Attribute";