type setupOption func(*setupOptions)

func withClientConfig(config *embed.Config) setupOption {
	return func(options *setupOptions) {
		options.client = func(t testing.TB) *clientv3.Client {
			return testserver.RunEtcd(t, config)
		}
	}
}

func withPrefix(prefix string) setupOption {
	return func(options *setupOptions) {
		options.prefix = prefix
	}
}