private function _convertListFinancialEventGroups($request) {

        $parameters = array();
        $parameters['Action'] = 'ListFinancialEventGroups';
        if ($request->isSetSellerId()) {
            $parameters['SellerId'] =  $request->getSellerId();
        }
        if ($request->isSetMWSAuthToken()) {
            $parameters['MWSAuthToken'] =  $request->getMWSAuthToken();
        }
        if ($request->isSetMaxResultsPerPage()) {
            $parameters['MaxResultsPerPage'] =  $request->getMaxResultsPerPage();
        }
        if ($request->isSetFinancialEventGroupStartedAfter()) {
            $parameters['FinancialEventGroupStartedAfter'] =  $request->getFinancialEventGroupStartedAfter();
        }
        if ($request->isSetFinancialEventGroupStartedBefore()) {
            $parameters['FinancialEventGroupStartedBefore'] =  $request->getFinancialEventGroupStartedBefore();
        }

        return $parameters;
    }