prefix.go
func (ui *PrefixUI) Warn(message string) {
	if ui.WarnPrefix == " " { //Lets keep the space if they want one
		message = ui.WarnPrefix + message
	} else if ui.WarnPrefix != "" {
		message = ui.WarnPrefix + " " + message
	}
	ui.UI.Warn(message)
}
func (ui *PrefixUI) Warn(message string) {
	if ui.WarnPrefix == " " { //Lets keep the space if they want one
		message = ui.WarnPrefix + message
	} else if ui.WarnPrefix != "" {
		message = ui.WarnPrefix + " " + message
	}
	ui.UI.Warn(message)
}
// Warn calls UI.Warn to write.
// Useful when you want separate colors or prefixes.
// WarnPrefix is used to prefix message.