54     protected $iterator = null;  variable in Sabre\\VObject\\Node
107         if (!is_null($this->iterator)) {
108             return $this->iterator;
119      * @param ElementList $iterator
121     public function setIterator(ElementList $iterator)  argument
123         $this->iterator = $iterator;
184         $iterator = $this->getIterator();
186         return $iterator->offsetExists($offset);
200         $iterator = $this->getIterator();
202         return $iterator->offsetGet($offset);
215         $iterator = $this->getIterator();
216         $iterator->offsetSet($offset, $value);
235         $iterator = $this->getIterator();
236         $iterator->offsetUnset($offset);