code: @Override
      public ExportTransitGatewayRoutesResult exportTransitGatewayRoutes(ExportTransitGatewayRoutesRequest request) {
          request = beforeClientExecution(request);
          return executeExportTransitGatewayRoutes(request);
      }
docs: <p>
  Exports routes from the specified transit gateway route table to the specified S3 bucket. By default, all routes
  are exported. Alternatively, you can filter by CIDR range.
  </p>
  
  @param exportTransitGatewayRoutesRequest
  @return Result of the ExportTransitGatewayRoutes operation returned by the service.
  @sample AmazonEC2.ExportTransitGatewayRoutes
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/ExportTransitGatewayRoutes" target="_top">AWS
  API Documentation</a>