code: func WithIndent(s string, n int) Option {
  	if n <= 0 {
  		n = 1
  	}
  	return option.New(optkeyIndent, strings.Repeat(s, n))
  }
docs: // WithIndent specifies the indent string to use, and the length.
  // For example, if you specify WithIndent(" " /* single space */, 2), the
  // indent will be 2 spaces per level.
  //
  // Please note that no check on the string will be performed, so anything
  // you specify will be used as-is.