function AbsoluteLink($master = false)
 {
     $page = $master ? Dataobject::get_by_id("SiteTree", $this->MasterPageID) : Dataobject::get_by_id("SiteTree", $this->RelatedPageID);
     if (!$page) {
         return;
     }
     $url = $page->AbsoluteLink();
 }
 public function testSaveIntoManyManyRelation()
 {
     $article = $this->objFromFixture('ListboxFieldTest_Article', 'articlewithouttags');
     $articleWithTags = $this->objFromFixture('ListboxFieldTest_Article', 'articlewithtags');
     $tag1 = $this->objFromFixture('ListboxFieldTest_Tag', 'tag1');
     $tag2 = $this->objFromFixture('ListboxFieldTest_Tag', 'tag2');
     $field = new ListboxField("Tags", "Test field", DataObject::get("ListboxFieldTest_Tag")->map()->toArray());
     $field->setMultiple(true);
     // Save new relations
     $field->setValue(array($tag1->ID, $tag2->ID));
     $field->saveInto($article);
     $article = Dataobject::get_by_id('ListboxFieldTest_Article', $article->ID, false);
     $this->assertEquals(array($tag1->ID, $tag2->ID), $article->Tags()->sort('ID')->column('ID'));
     // Remove existing relation
     $field->setValue(array($tag1->ID));
     $field->saveInto($article);
     $article = Dataobject::get_by_id('ListboxFieldTest_Article', $article->ID, false);
     $this->assertEquals(array($tag1->ID), $article->Tags()->sort('ID')->column('ID'));
     // Set NULL value
     $field->setValue(null);
     $field->saveInto($article);
     $article = Dataobject::get_by_id('ListboxFieldTest_Article', $article->ID, false);
     $this->assertEquals(array(), $article->Tags()->sort('ID')->column('ID'));
 }