ImmutableSortedMultiset.<String>naturalOrder().add("a").add("b").add("a").add("c").build();
    assertEquals(HashMultiset.create(asList("a", "b", "a", "c")), multiset);
  }

  public void testReuseBuilder() {
    Builder<String> builder =
        ImmutableSortedMultiset.<String>naturalOrder().add("a").add("b").add("a").add("c");
    ImmutableSortedMultiset<String> multiset1 = builder.build();