'key' => 'summary_subtotals_method',
'section' => 'invoicing',
'description' => 'How to group line items when calculating summary subtotals. By default, it will be the same method used for grouping invoice sections.',
'key' => 'summary_subtotals_method',
'section' => 'invoicing',
'description' => 'How to group line items when calculating summary subtotals. By default, it will be the same method used for grouping invoice sections.',