private function setSitesTable($numSites)
{
$sites = new DataTable();
$sites->addRowsFromSimpleArray($this->buildSitesArray(range(1, $numSites)));
$sites->setMetadata('last_period_date', Period\Factory::build('day', '2012-12-12'));
$this->dashboard->setSitesTable($sites);
return $sites;
}