/**
  * Adds a specified 'object' to the document
  *
  * $object int specifying an object created with {@link
  * CPDF_Adapter::open_object()}.  $where can be one of:
  * - 'add' add to current page only
  * - 'all' add to every page from the current one onwards
  * - 'odd' add to all odd numbered pages from now on
  * - 'even' add to all even numbered pages from now on
  * - 'next' add the object to the next page only
  * - 'nextodd' add to all odd numbered pages from the next one
  * - 'nexteven' add to all even numbered pages from the next one
  *
  * @see Cpdf::addObject()
  *
  * @param int $object
  * @param string $where
  */
 function add_object($object, $where = 'all')
 {
     $this->_pdf->addObject($object, $where);
 }