@Override
          public boolean remove(@CheckForNull Object o) {
            return SubRangeMapAsMap.this.remove(o) != null;
          }

          @Override
          public boolean retainAll(Collection<?> c) {
            return removeEntryIf(compose(not(in(c)), Maps.<Range<K>>keyFunction()));
          }
        };
      }

      @Override
      public Set<Entry<Range<K>, V>> entrySet() {

    }
    if (intersect(features, requirements.getAbsentFeatures())) {
      if (logger.isLoggable(FINER)) {
        Set<Feature<?>> unwantedFeatures = copyToSet(requirements.getAbsentFeatures());
        unwantedFeatures.retainAll(features);
        logger.finer(
            Platform.format(
                "%s: skipping because these features are present: %s", method, unwantedFeatures));
      }
      return false;
    }

                  }

                  @Override
                  public boolean retainAll(Collection<?> c) {
                    return Iterators.retainAll(iterator(), c);
                  }
                };
              }
            })
        .named("ArrayList with Iterators.removeAll and retainAll")
        .withFeatures(

      return standardRemove(object);
    }

    @Override
    public boolean removeAll(Collection<?> collection) {
      return standardRemoveAll(collection);
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
      return standardRetainAll(collection);
    }

    @Override
    public Object[] toArray() {
      return standardToArray();
    }

    @Override

      return standardRemove(object);
    }

    @Override
    public boolean removeAll(Collection<?> collection) {
      return standardRemoveAll(collection);
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
      return standardRetainAll(collection);
    }

    @Override
    public Object[] toArray() {
      return standardToArray();
    }

    @Override

    assertFalse(multimap().containsEntry(k0(), v0()));
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testRetainAllPropagatesToMultimap() {
    multimap().entries().retainAll(singleton(mapEntry(k0(), v0())));
    assertEquals(getSubjectGenerator().create(mapEntry(k0(), v0())), multimap());
    assertEquals(1, multimap().size());
    assertTrue(multimap().containsEntry(k0(), v0()));
  }

    } catch (UnsupportedOperationException expected) {
    }
    assertCollectionsAreEquivalent(copy, collection);

    try {
      collection.retainAll(siblingCollection);
      fail("retainAll succeeded on unmodifiable collection");
    } catch (UnsupportedOperationException expected) {
    }
    assertCollectionsAreEquivalent(copy, collection);
  }

  /**

  }

  public void testRetainAll_collection() {
    List<String> list = newArrayList("a", "b", "c", "d", "e");
    assertTrue(Iterables.retainAll(list, newArrayList("b", "d", "f")));
    assertEquals(newArrayList("b", "d"), list);
    assertFalse(Iterables.retainAll(list, newArrayList("b", "e", "d")));
    assertEquals(newArrayList("b", "d"), list);
  }

  public void testRetainAll_iterable() {

   */
  @Deprecated
  public static <T> Set<T> intersection(Set<? extends T> set1, Set<? extends T> set2) {
    Set<T> result = copyToSet(set1);
    result.retainAll(set2);
    return result;
  }

  private FeatureUtil() {}

          }
        }
        return map().keySet().removeAll(toRemove);
      }
    }

    @Override
    public boolean retainAll(Collection<?> c) {
      try {
        return super.retainAll(checkNotNull(c));
      } catch (UnsupportedOperationException e) {
        Set<K> toRetain = newHashSet();
        for (Entry<K, V> entry : map().entrySet()) {