/**
     * Returns important information common to each collection in the API.
     * Most of this data can be used to paginate through the results.
     * @param collection $collection The result from a Management API request.
     * @return string An HTML representation.
     */
    private function getCollectionInfoHtml(&$collection)
    {
        $previousLink = $collection->getPreviousLink() ? $collection->getPreviousLink() : 'none';
        $nextLink = $collection->getNextLink() ? $collection->getNextLink() : 'none';
        return <<<HTML
<pre>
Username       = {$collection->getUsername()}
Items Per Page = {$collection->getItemsPerPage()}
Total Results  = {$collection->getTotalResults()}
Start Index    = {$collection->getStartIndex()}
Previous Link  = {$previousLink}
Next Link      = {$nextLink}
</pre>
HTML;
    }