public Principal getOriginalPrincipal() {
    return principal;
  }
@Test
  public void shouldReturnOriginalPrincipal() {
    assertThat(wrappedKsqlPrincipal.getOriginalPrincipal(), is(ksqlPrincipal));
    assertThat(wrappedOtherPrincipal.getOriginalPrincipal(), is(otherPrincipal));
  }