private function prettifyIndexLabel($labelType, $label)
{
if ($labelType == self::TABLE_METADATA_PERIOD_INDEX) {
// prettify period labels
$period = $this->periods[$label];
$label = $period->getLabel();
if ($label === 'week' || $label === 'range') {
return $period->getRangeString();
}
return $period->getPrettyString();
}
return $label;
}