The pager plugin is available through $this->pager, the API that it offers should be properly defined:

Frontend

function setTitle($title)

function jasScript($show)
function addJavaScript($file)

function removeJavaScript($file)
function addStyleSheet($file, $media=false)

function removeStyleSheet($file)

function metaKeywords($keywords, $append=false)

function metaDescription($text, $append=false)

function addRelationLinks($rel, $link)

function removeRelationLinks($rel, $link)

Backend

global $_pager_simple;