code: func (ns *Namespace) Repeat(n, s interface{}) (string, error) {
  	ss, err := cast.ToStringE(s)
  	if err != nil {
  		return "", err
  	}
  
  	sn, err := cast.ToIntE(n)
  	if err != nil {
  		return "", err
  	}
  
  	if sn < 0 {
  		return "", errors.New("strings: negative Repeat count")
  	}
  
  	return _strings.Repeat(ss, sn), nil
  }
docs: // Repeat returns a new string consisting of count copies of the string s.