1<?php
2class FetchedData {
3  function get_additional_data() {
4    die("Unoverridden 'get_additional_data' called in ".get_class($this));
5  }
6
7  function get_content() {
8    die("Unoverridden 'get_content' called in ".get_class($this));
9  }
10
11  function get_uri() {
12    return "";
13  }
14}
15?>