src/Actions/Processors/StoreGroupUpdateProcessor.php
public function execute($row, $name = null)
    {
        parent::execute($row, $name);
        return $row[MemberNames::GROUP_ID];
    }
public function execute($row, $name = null)
    {
        parent::execute($row, $name);
        return $row[MemberNames::GROUP_ID];
    }
Update's the passed row.

@param array       $row  The row to update
@param string|null $name The name of the prepared statement that has to be executed

@return string The ID of the updated store group