Triggered after an existing product record has been updated from a CSV file.
The event handler should accept three parameters - the array of imported fields, the product identifier
and the array of column values loaded from the CSV file.
public function subscribeEvents()
{
Backend::$events->addEvent('shop:onAfterCsvProductUpdated', $this, 'csv_product_updated');
}
public function csv_product_updated($fields, $id, $csv_row)
{
// Do something
}