code: func (d *DefaultLoader) MustLoad(conf interface{}) {
  	if err := d.Load(conf); err != nil {
  		fmt.Fprintln(os.Stderr, err)
  		os.Exit(2)
  	}
  
  	// we at koding, believe having sane defaults in our system, this is the
  	// reason why we have default validators in DefaultLoader. But do not cause
  	// nil pointer panics if one uses DefaultLoader directly.
  	if d.Validator != nil {
  		d.MustValidate(conf)
  	}
  }
docs: // MustLoad is like Load but panics if the config cannot be parsed.