in eng/update-dependencies/DependencyUpdater.cs [155:166]
private static IDependencyUpdater CreateManifestUpdater(string dateStampVariablePrefix, string buildInfoName)
{
const string TagDateStampGroupName = "tagDateStampValue";
return new FileRegexReleaseUpdater
{
Path = Path.Combine(Program.RepoRoot, "manifest.datestamps.json"),
BuildInfoName = buildInfoName,
Regex = new Regex($"\"{dateStampVariablePrefix}ReleaseDateStamp\": \"(?<{TagDateStampGroupName}>\\d{{8}})\""),
VersionGroupName = TagDateStampGroupName
};
}