code: func (kinesis *Kinesis) DescribeDeliveryStream(args *RequestArgs) (resp *DescribeDeliveryStreamResp, err error) {
  	kinesis.Firehose()
  	params := makeParams("DescribeDeliveryStream")
  	resp = &DescribeDeliveryStreamResp{}
  	err = kinesis.query(params, args.params, resp)
  	if err != nil {
  		return nil, err
  	}
  	return
  }
docs: // http://docs.aws.amazon.com/firehose/latest/APIReference/API_DescribeDeliveryStream.html