/**
* Set the title, and create the cache key under which to store this page's TOC.
*
* @param Title $t The title to use.
*
* @see Skin::setTitle()
* @return void
*/
function setTitle($t)
{
parent::setTitle($t);
$article_id = $this->mTitle->getArticleID();
$this->savedTocCacheKey = wfMemcKey('clean', 'saved-toc', $article_id);
}