private function getCurrentValue()
{
$currentValue = $this->getFilter()->getCurrentValue();
if (!is_array($currentValue)) {
$currentValue = [];
}
if (!isset($currentValue['from']) || $currentValue['from'] === '') {
$currentValue['from'] = $this->getMinValue();
}
if (!isset($currentValue['to']) || $currentValue['to'] === '') {
$currentValue['to'] = $this->getMaxValue();
}
return $currentValue;
}