/**
  * Delete this recording from WebEx.
  *
  * @return bool    True on success, false on failure.
  * @throws webexactivity_exception on error.
  */
 public function true_delete()
 {
     global $DB;
     $xml = type\base\xml_gen::delete_recording($this->__get('recordingid'));
     $webex = new webex();
     $response = $webex->get_response($xml);
     if ($response === false) {
         throw new exception\webexactivity_exception('errordeletingrecording');
     }
     $DB->delete_records('webexactivity_recording', array('id' => $this->__get('id')));
     return true;
 }