Iterable<String> letters = Splitter.on('.').omitEmptyStrings().trimResults().split(emptyToken);
    assertThat(letters).containsExactly("a", "c").inOrder();
  }

  public void testCharacterSplitOnEmptyString() {
    Iterable<String> nothing = Splitter.on('.').split("");
    assertThat(nothing).containsExactly("").inOrder();
  }

  public void testCharacterSplitOnEmptyStringOmitEmptyStrings() {