public function getAll($idSite, $period, $date, $segment = false)
{
$dataTable = $this->getReferrerType($idSite, $period, $date, $segment, $typeReferrer = false, $idSubtable = false, $expanded = true);
if ($dataTable instanceof DataTable\Map) {
throw new Exception("Referrers.getAll with multiple sites or dates is not supported (yet).");
}
$dataTable = $dataTable->mergeSubtables($labelColumn = 'referer_type', $useMetadataColumn = true);
$dataTable->queueFilter('ReplaceColumnNames');
$dataTable->queueFilter('ReplaceSummaryRowLabel');
return $dataTable;
}