Method create

output/java_guava/1.4.17/Sets.java:1224–1251

(List<? extends Set<? extends E>> sets)

    private final transient CartesianList<E> delegate;

    static <E> Set<List<E>> create(List<? extends Set<? extends E>> sets) {
      ImmutableList.Builder<ImmutableSet<E>> axesBuilder = new ImmutableList.Builder<ImmutableSet<E>>(sets.size());
      for (Set<? extends E> set : sets) {
        ImmutableSet<E> copy = ImmutableSet.copyOf(set);
        if (copy.isEmpty()) {
          return ImmutableSet.of();
        }
        axesBuilder.add(copy);
      }
      final ImmutableList<ImmutableSet<E>> axes = axesBuilder.build();
      ImmutableList<List<E>> listAxes = new ImmutableList<List<E>>() {
                                          @Override
                                          public int size() {
                                            return axes.size();
                                          }

                                          @Override
                                          public List<E> get(int index) {
                                            return axes.get(index).asList();
                                          }

                                          @Override
                                          boolean isPartialView() {
                                            return true;
                                          }
                                        };
      return new CartesianSet<E>(axes, new CartesianList<E>(listAxes));
    }

    private CartesianSet(ImmutableList<ImmutableSet<E>> axes, CartesianList<E> delegate) {
      this.axes = axes;