helper_map.go
func (h *HelperMap) AddMany(helpers map[string]interface{}) error {
	for k, v := range helpers {
		err := h.Add(k, v)
		if err != nil {
			return err
		}
	}
	return nil
}
func (h *HelperMap) AddMany(helpers map[string]interface{}) error {
	for k, v := range helpers {
		err := h.Add(k, v)
		if err != nil {
			return err
		}
	}
	return nil
}
func ( h * HelperMap ) AddMany ( helpers map [ string ] interface { } ) error { for k , v := range helpers { err := h . Add ( k , v ) if err != nil { return err } } return nil }
// AddMany helpers at the same time.
AddMany helpers at the same time .