public TextBlock getOriginal() {
    return this.original;
  }
@Test
  public void getOriginal_returns_original() {
    assertThat(new Duplication(SOME_ORIGINAL_TEXTBLOCK, Arrays.asList(new InnerDuplicate(TEXT_BLOCK_1)))
      .getOriginal()).isSameAs(SOME_ORIGINAL_TEXTBLOCK);
  }