package main import "errors" func init() { registerServiceHandler("static", func(params []string) (title, text, color string, err error) { if len(params) < 2 { err = errors.New("You need to provide title and text") return } if len(params) < 3 { params = append(params, defaultColor) } title = params[0] text = params[1] color = params[2] return }) }