can't figure out how to add a line to sale.subscription using the create medal from another model
   supsctiption_pak = self.env['product.template'].search([('name', '=', pak_name),('recurring_invoice', '=', True)], limit=1)
        supsctiption_info = {
            'partner_id': vals['name'],
        }    
        add_supsctiption = self.env['sale.subscription'].create(supsctiption_info)    
        print('ssssss',supsctiption_pak)
        #works
    
        add_supsctiption_pak = {
                'product_id': supsctiption_pak.id,
                'partner_id': add_supsctiption.id,
            }    
            link_user_to_supsctiption = self.env['sale.subscription.line'].create(add_supsctiption_pak)
