code: private function convertGetReport($request)
      {
  
          $parameters = array();
          $parameters['Action'] = 'GetReport';
          if ($request->isSetMarketplace()) {
              $parameters['Marketplace'] = $request->getMarketplace();
          }
          if ($request->isSetMerchant()) {
              $parameters['Merchant'] = $request->getMerchant();
          }
          if ($request->isSetReportId()) {
              $parameters['ReportId'] = $request->getReportId();
          }
          if ($request->isSetMWSAuthToken()) {
              $parameters['MWSAuthToken'] = $request->getMWSAuthToken();
          }
  
          return array(CONVERTED_PARAMETERS_KEY => $parameters, CONVERTED_HEADERS_KEY => $this->defaultHeaders);
      }
docs: Convert GetReportRequest to name value pairs
  @param MarketplaceWebService_Model_GetReportRequest $request
  @return array