}

  public void testCopyOf_shortcut_immutableList() {
    Collection<String> c = ImmutableList.of("a", "b", "c");
    assertThat(ImmutableList.copyOf(c)).isSameInstanceAs(c);
  }

  public void testBuilderAddArrayHandlesNulls() {
    @Nullable String[] elements = new @Nullable String[] {"a", null, "b"};
    ImmutableList.Builder<String> builder = ImmutableList.builder();

  }

  public void testCopyOf_shortcut_immutableList() {
    Collection<String> c = ImmutableList.of("a", "b", "c");
    assertThat(ImmutableList.copyOf(c)).isSameInstanceAs(c);
  }

  public void testBuilderAddArrayHandlesNulls() {
    @Nullable String[] elements = new @Nullable String[] {"a", null, "b"};
    ImmutableList.Builder<String> builder = ImmutableList.builder();