public function testNull()
 {
     $sf = KVDdom_ChangeableSystemFields::newNull();
     $this->assertInstanceOf('KVDdom_ChangeableSystemFields', $sf);
     $this->assertEquals('anoniem', $sf->getAangemaaktDoor());
     $this->assertEquals(0, $sf->getVersie());
     $this->assertFalse($sf->isBewerkt());
 }
 /**
  * newNull
  *
  * @param integer $versie
  * @return KVDdom_NullSystemFields
  */
 public function newNull($versie = 0)
 {
     return KVDdom_ChangeableSystemFields::newNull();
 }