Getting Top Content from Google Analytics

I've just downloaded some code from http://www.swis.nl/ga/ and am making a great start in writing some custom reports for a client.

I've come unstuck making my own function to get the Top Content. It's fine from the site but I want my code to retrieve the "title" of the content and that's a manual process currently.

Currently I have

    /**
    * Get unique pageviews for given period (sk experimental)
    * 
    */    
    public function getTopContent(){
                                
        return $this->getData(array( 'dimensions' => 'ga:pagePath',
                                     'metrics'    => 'ga:pageviews',
                                     'sort'       => 'ga:visits'));
    }

PHP:

but it falls over.

any hints on what the dimensions, metrics and sort really should be?