code: public function url($page = 1) {
          // Clean the page number
          $page = max(1, (int)$page);
  
          // No page number in URLs to first page
          if ($page === 1 AND !$this->first_page_in_url) {
              $page = NULL;
          }
  
          switch ($this->current_page_source) {
              case 'query_string':
              case 'mixed':
  
                  return URL::site($this->request->uri() .
                      $this->query([$this->current_page_source_key => $page]));
  
              case 'route':
  
                  return URL::site($this->route->url(array_merge($this->route_params,
                          array($this->current_page_source_key => $page))) . $this->query());
          }
  
          return '#';
      }
docs: Generates the full URL for a certain page.
  
  @param   integer  page number
  @return  string   page URL