CloseRespFn: closeRespFn,
	}
	if err = args.Validate(); err != nil {
		return args, err
	}
	return args, nil
}

// New - initializes opa policy engine connector.
func New(args Args) *Opa {
	// No opa args.
	if args.URL == nil || args.URL.Scheme == "" && args.AuthToken == "" {
		return nil
	}
	return &Opa{
		args:   args,
		client: &http.Client{Transport: args.Transport},
	}
}

	EnvKESEndpoint         = "MINIO_KMS_KES_ENDPOINT"       // One or multiple KES endpoints, separated by ','
	EnvKESKeyName          = "MINIO_KMS_KES_KEY_NAME"       // The default key name used for IAM data and when no key ID is specified on a bucket
	EnvKESAPIKey           = "MINIO_KMS_KES_API_KEY"        // Access credential for KES - API keys and private key / certificate are mutually exclusive

	}
	region := env.Get(EnvRegion, "")
	if region == "" {
		env.Get(EnvRegionName, "")
	}
	if region == "" {
		region = env.Get(EnvSiteRegion, siteKV.Get(RegionKey))
	}
	if region == "" {
		// No region config found in the site-subsystem. So lookup the legacy
		// region sub-system.
		if err = CheckValidKeys(RegionSubSys, regionKV, DefaultRegionKVS); err != nil {
			// An invalid key was found in the region sub-system.