public void testPrependOneElement() {
    String[] result = ObjectArrays.concat("foo", new String[] {"bar"});
    assertThat(result).asList().containsExactly("foo", "bar").inOrder();
  }

  public void testPrependTwoElements() {
    String[] result = ObjectArrays.concat("foo", new String[] {"bar", "baz"});
    assertThat(result).asList().containsExactly("foo", "bar", "baz").inOrder();
  }

  public void testAppendZeroElements() {