185     protected $interval = 1;  variable in Sabre\\VObject\\Recur\\RRuleIterator
314         $this->currentDate = $this->currentDate->modify('+'.$this->interval.' hours');
323             $this->currentDate = $this->currentDate->modify('+'.$this->interval.' days');
344 …                $this->currentDate = $this->currentDate->modify('+'.($this->interval - 1).' days');
349                 $this->currentDate = $this->currentDate->modify('+'.$this->interval.' days');
373             $this->currentDate = $this->currentDate->modify('+'.$this->interval.' weeks');
404                 $this->currentDate = $this->currentDate->modify('+'.($this->interval - 1).' weeks');
428                 $this->currentDate = $this->currentDate->modify('+'.$this->interval.' months');
434                     $tempDate = $tempDate->modify('+ '.($this->interval * $increase).' months');
462             $this->currentDate = $this->currentDate->modify('+ '.$this->interval.' months');
509                     $nextDate = $nextDate->modify('+ '.($this->interval * $counter).' years');
551                     $currentYear += $this->interval;
592                     $currentYear += $this->interval;
597             $this->currentDate = $this->currentDate->modify('+'.$this->interval.' years');
631                         $currentYear += $this->interval;
657                     $currentYear += $this->interval;