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;
  }