code: func (r *RequestBuilder) DebugLog(format string, args ...interface{}) {
  	r.Request.DebugLog += fmt.Sprintf(format+"\n", args...)
  	if r.env != nil {
  		r.env.DebugLog(format, args...)
  	}
  }
docs: // DebugLog adds a line to the request log and the triage log.