original_string: public function unpublishDate($var = null)
      {
          if ($var !== null) {
              $this->unpublish_date = Utils::date2timestamp($var, $this->dateformat);
          }
  
          return $this->unpublish_date;
      }
code: public function unpublishDate($var = null)
      {
          if ($var !== null) {
              $this->unpublish_date = Utils::date2timestamp($var, $this->dateformat);
          }
  
          return $this->unpublish_date;
      }
code_tokens: public function unpublishDate ( $ var = null ) { if ( $ var !== null ) { $ this -> unpublish_date = Utils :: date2timestamp ( $ var , $ this -> dateformat ) ; } return $ this -> unpublish_date ; }
docstring: Gets and Sets the Page unpublish date
  
  @param  string $var string representation of a date
  
  @return int|null         unix timestamp representation of the date
docstring_tokens: Gets and Sets the Page unpublish date