Allows to override the reporting end date.
The event handler should return the new reporting end date as string. The default reporting end date
matches the current date in the application time zone.
Example:
public function subscribeEvents()
{
Backend::$events->addEvent('shop:onGetEndReportingDate', $this, 'get_end_reporting_date');
}
public function get_end_reporting_date($default_date)
{
return '20015-10-01';
}