code: func (t *templateHandler) AddLateTemplate(name, tpl string) error {
  	h := t.getTemplateHandler(name)
  	if err := h.addLateTemplate(name, tpl); err != nil {
  		return err
  	}
  	return nil
  }
docs: // AddLateTemplate is used to add a template late, i.e. after the
  // regular templates have started its execution.