func manifestLayerInfosToBlobInfos(layers []manifest.LayerInfo) []types.BlobInfo {
	blobs := make([]types.BlobInfo, len(layers))
	for i, layer := range layers {
		blobs[i] = layer.BlobInfo
	}
	return blobs
}
func manifestLayerInfosToBlobInfos(layers []manifest.LayerInfo) []types.BlobInfo {
	blobs := make([]types.BlobInfo, len(layers))
	for i, layer := range layers {
		blobs[i] = layer.BlobInfo
	}
	return blobs
}
// manifestLayerInfosToBlobInfos extracts a []types.BlobInfo from a []manifest.LayerInfo.