code: @Override
      public Request<DescribeSubnetsRequest> getDryRunRequest() {
          Request<DescribeSubnetsRequest> request = new DescribeSubnetsRequestMarshaller().marshall(this);
          request.addParameter("DryRun", Boolean.toString(true));
          return request;
      }
docs: This method is intended for internal use only. Returns the marshaled request configured with additional
  parameters to enable operation dry-run.