code: func NewCORSHandler() *CORSHandler {
  	return &CORSHandler{
  		PredicateOrigin: raiqub.TrueForAll,
  		Headers: []string{
  			"Origin", "X-Requested-With", "Content-Type",
  			"Accept", "Authorization",
  		},
  		ExposedHeaders: make([]string, 0),
  	}
  }
docs: // NewCORSHandler creates a new CORSHandler with default values.