public ImmutableSet<Range<C>> asRanges() {
    if (ranges.isEmpty()) {
      return ImmutableSet.of();
    }
    return new RegularImmutableSortedSet<>(ranges, Range.<C>rangeLexOrdering());
  }

  @Override
  public ImmutableSet<Range<C>> asDescendingSetOfRanges() {
    if (ranges.isEmpty()) {
      return ImmutableSet.of();
    }
    return new RegularImmutableSortedSet<>(ranges.reverse(), Range.<C>rangeLexOrdering().reverse());

    if (ranges.isEmpty()) {
      return ImmutableMap.of();
    }
    RegularImmutableSortedSet<Range<K>> rangeSet =
        new RegularImmutableSortedSet<>(ranges, Range.<K>rangeLexOrdering());
    return new ImmutableSortedMap<>(rangeSet, values);
  }

  @Override
  public ImmutableMap<Range<K>, V> asDescendingMapOfRanges() {
    if (ranges.isEmpty()) {
      return ImmutableMap.of();
    }

        @J2ktIncompatible // serialization
        @GwtIncompatible // serialization
        Object writeReplace() {
          return super.writeReplace();
        }
      }
      return new EntrySetImpl();
    }

    @Override
    ImmutableCollection<V> createValues() {
      return new ImmutableMapValues<>(this);
    }

    // redeclare to help optimizers with b/310253115

          uid = alreadySet;
        }
      }
      return uid;
    }

    @Override
    public int compare(@CheckForNull Object left, @CheckForNull Object right) {
      if (left == right) {
        return 0;
      } else if (left == null) {
        return -1;
      } else if (right == null) {
        return 1;
      }
      int leftCode = identityHashCode(left);

        return Sets.unmodifiableNavigableSet((NavigableSet<E>) collection);
      } else if (collection instanceof SortedSet) {
        return Collections.unmodifiableSortedSet((SortedSet<E>) collection);
      } else if (collection instanceof Set) {
        return Collections.unmodifiableSet((Set<E>) collection);
      } else if (collection instanceof List) {

   * @throws NullPointerException if any element in the stream is {@code null}.
   * @return {@code Optional.of(onlyElement)} if the stream has exactly one element (must not be
   *     {@code null}) and returns {@code Optional.empty()} if it has none.
   */
  @SuppressWarnings("unchecked")
  public static <T> Collector<T, ?, Optional<T>> toOptional() {
    return (Collector) TO_OPTIONAL;
  }

                    return delegate;
                  }

                  @Override
                  public boolean removeAll(Collection<?> c) {
                    return Iterators.removeAll(iterator(), c);
                  }

                  @Override
                  public boolean retainAll(Collection<?> c) {
                    return Iterators.retainAll(iterator(), c);
                  }

    return classInfo(cls, cls.getClassLoader());
  }

  private static ClassInfo classInfo(Class<?> cls, ClassLoader classLoader) {
    String resource = cls.getName().replace('.', '/') + ".class";
    return new ClassInfo(FILE, resource, classLoader);
  }

  private static Manifest manifestClasspath(String classpath) throws IOException {
    return manifest("Class-Path: " + classpath + "\n");
  }

public interface Supplier<T extends @Nullable Object>
{
  /**
   * Retrieves an instance of the appropriate type. The returned object may or may not be a new
   * instance, depending on the implementation.
   *
   * @return an instance of the appropriate type
   */
  @ParametricNullness
  T get();

  }

  @Override
  public Multimap<K, V> unfiltered() {
    return unfiltered;
  }

  @Override
  public Predicate<? super Entry<K, V>> entryPredicate() {
    return predicate;
  }

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

  private boolean satisfies(@ParametricNullness K key, @ParametricNullness V value) {
    return predicate.apply(Maps.immutableEntry(key, value));
  }