code: func newReporter(c *Context) (reporter.Reporter, error) {
  	rep, err := config.NewReporterFromUrls(c.StringSlice(FlagReporter))
  	if err != nil {
  		panic(fmt.Errorf("couldn't create reporter: %#v", err))
  	}
  	return rep, nil
  }
docs: // Reporter ============================