return "passthrough"
	}
	return "passthrough"
}

// imageURL creates url from parts.
// imageType is appended if not empty
// if imageType is already present in the tag, then it is replaced.
// docker.io/istio/proxyv2:1.12-distroless
// gcr.io/gke-release/asm/proxyv2:1.11.2-asm.17-distroless
// docker.io/istio/proxyv2:1.12
func imageURL(hub, imageName, tag, imageType string) string {