public function testReturnedArrayObjectUsingPlaylistExecute()
 {
     // add image entry
     $imageEntry = $this->addImageEntry();
     // execute playlist from filters
     $playlistFilter = new MediaEntryFilterForPlaylist();
     $playlistFilter->idEqual = $imageEntry->id;
     $filterArray = array();
     $filterArray[] = $playlistFilter;
     $playlistExecute = $this->_client->getPlaylistService()->executeFromFilters($filterArray, 10);
     $this->assertEqual(count($playlistExecute), 1);
     $firstPlaylistEntry = $playlistExecute[0];
     $this->assertEqual($firstPlaylistEntry->id, $imageEntry->id);
     $this->_client->getMediaService()->delete($imageEntry->id);
 }