}

func (i Instances) PortForName(name string) Port {
	return i.Config().Ports.MustForName(name)
}

func (i Instances) Config() Config {
	return i.mustGetFirst().Config()
}

func (i Instances) Instances() Instances {
	return i
}

func (i Instances) mustGetFirst() Instance {
	if i.Len() == 0 {
		panic("instances are empty")
	}
	return i[0]
}