original_string: public function getExpression()
      {
          $expression = array(
              $this->minute,
              $this->hour,
              $this->dayOfMonth,
              $this->month,
              $this->dayOfWeek
          );
  
          return implode(' ', $expression);
      }
code: public function getExpression()
      {
          $expression = array(
              $this->minute,
              $this->hour,
              $this->dayOfMonth,
              $this->month,
              $this->dayOfWeek
          );
  
          return implode(' ', $expression);
      }
code_tokens: public function getExpression ( ) { $ expression = array ( $ this -> minute , $ this -> hour , $ this -> dayOfMonth , $ this -> month , $ this -> dayOfWeek ) ; return implode ( ' ' , $ expression ) ; }
docstring: Return the cron expression
  
  @return string cron expression
docstring_tokens: Return the cron expression