[Stitch_MS]

Может, что-то типа этого?

[ExtensionOf(classStr(SalesTaxDeclarationInformationReportService))]
final class SalesTaxDeclarationInformationReportServiceNNN_Extension // <-- new extension
{
    public void run(SalesTaxDeclarationInfoReportContract _dataContract)
    {
        try
        {
            throw Exception::Numeric;

            next run(_dataContract);
        }
        catch (Exception::Numeric)
        {
            dataContract = _dataContract;

            this.processReport();

            this.nnnRunER(); // <- new method
        }
    }

    private void nnnRunER()
    {
        // ...
    }

}