getEtag = asset =>
						cacheGenerate.mergeEtags(
							cacheGenerate.getLazyHashedEtag(asset.source),
							Array.from(
								/** @type {ReferencedHashes} */ (asset.referencedHashes),
								hash => hashToNewHash.get(hash)
							).join("|")
						)
@param {AssetInfoForRealContentHash} asset asset info
@returns {Etag} etag