Method create

guava/src/com/google/common/collect/Sets.java:1537–1574

(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<>(sets.size());
      for (Set<? extends E> set : sets) {
        ImmutableSet<E> copy = ImmutableSet.copyOf(set);
        if (copy.isEmpty()) {
          return ImmutableSet.of();
        }
        axesBuilder.add(copy);
      }
      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;
            }

            // redeclare to help optimizers with b/310253115
            @SuppressWarnings("RedundantOverride")
            @Override
            @J2ktIncompatible
            @GwtIncompatible
                        Object writeReplace() {
              return super.writeReplace();
            }
          };
      return new CartesianSet<E>(axes, new CartesianList<E>(listAxes));
    }

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