code: @Override
      public DeleteTransitGatewayResult deleteTransitGateway(DeleteTransitGatewayRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteTransitGateway(request);
      }
docs: <p>
  Deletes the specified transit gateway.
  </p>
  
  @param deleteTransitGatewayRequest
  @return Result of the DeleteTransitGateway operation returned by the service.
  @sample AmazonEC2.DeleteTransitGateway
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DeleteTransitGateway" target="_top">AWS API
  Documentation</a>