public function fetch($url)
    {
        $SHDObject = $this->getSHDWrapper($url);
        $urls      = $this->getPageUrls($SHDObject);
        $titles    = $this->getPageTitles($SHDObject);
        $snippets  = $this->getPageSnippets($SHDObject);
        return array('urls'     => $urls,
                     'titles'   => $titles,
                     'snippets' => $snippets);
    }