code: func NewReporterFromUrls(urls []string) (reporter.Reporter, error) {
  	multiRep := reporter.MultiReporter{}
  	for _, url := range urls {
  		rep, err := newReporterFromUrl(url)
  		if err != nil {
  			return nil, err
  		}
  		multiRep = append(multiRep, rep)
  	}
  	return multiRep, nil
  }
docs: // Returns a MultiReporter from URL strings such as:
  // "hb://api.honeybadger.io/?key=hbkey&environment=hbenv" or
  // "rollbar://api.rollbar.com/?key=rollbarkey&environment=rollbarenv"