src/Contao/Dca/Builder/Legacy/LegacyDcaDataDefinitionBuilder.php
private function determineEmptyValueFromSql(PropertyInterface $property, $sqlType)
    {
        if ($property instanceof EmptyValueAwarePropertyInterface) {
            $property->setEmptyValue(Widget::getEmptyValueByFieldType($sqlType));
        }
    }
private function determineEmptyValueFromSql(PropertyInterface $property, $sqlType)
    {
        if ($property instanceof EmptyValueAwarePropertyInterface) {
            $property->setEmptyValue(Widget::getEmptyValueByFieldType($sqlType));
        }
    }
private function determineEmptyValueFromSql ( PropertyInterface $ property , $ sqlType ) { if ( $ property instanceof EmptyValueAwarePropertyInterface ) { $ property -> setEmptyValue ( Widget :: getEmptyValueByFieldType ( $ sqlType ) ) ; } }
Try to determine the empty type from SQL type.

@param PropertyInterface $property The property to store the value into.
@param string            $sqlType  The SQL type.

@return void
Try to determine the empty type from SQL type .