public boolean isAnonymous() {
    return anonymous;
  }
@Test
  public void isAnonymous() throws Exception {
    assertTrue( ActingPrincipal.ANONYMOUS.isAnonymous() );
    assertFalse( new ActingPrincipal( "harold" ).isAnonymous() );
    assertFalse( new ActingPrincipal( "" ).isAnonymous() );
  }