original_string: public function getPreviousRunDate($currentTime = 'now', $nth = 0, $allowCurrentDate = false)
      {
          return $this->getRunDate($currentTime, $nth, true, $allowCurrentDate);
      }
code: public function getPreviousRunDate($currentTime = 'now', $nth = 0, $allowCurrentDate = false)
      {
          return $this->getRunDate($currentTime, $nth, true, $allowCurrentDate);
      }
code_tokens: public function getPreviousRunDate ( $ currentTime = 'now' , $ nth = 0 , $ allowCurrentDate = false ) { return $ this -> getRunDate ( $ currentTime , $ nth , true , $ allowCurrentDate ) ; }
docstring: Get a previous run date relative to the current date or a specific date
  
  @param string|\DateTime $currentTime      Relative calculation date
  @param int              $nth              Number of matches to skip before returning
  @param bool             $allowCurrentDate Set to TRUE to return the
  current date if it matches the cron expression
  
  @return \DateTime
  @throws \RuntimeException on too many iterations
  @see \Cron\CronExpression::getNextRunDate
docstring_tokens: Get a previous run date relative to the current date or a specific date