@Test
public void verifyDecode4InvalidFails() throws Exception {

  assertThat(decode(FOUR_BYTES_ENCODED_INVALID1), is(nullValue()));
  assertThat(decode(FOUR_BYTES_ENCODED_INVALID2), is(nullValue()));
  assertThat(decode(FOUR_BYTES_ENCODED_INVALID3), is(nullValue()));
  assertThat(decode(FOUR_BYTES_ENCODED_PERCENT_INVALID), is(nullValue()));
}