public XElement ToXml() => new XElement(
nameof(UsageData),
CreatedByRid == null ? null : new XElement(
nameof(CreatedByRid),
CreatedByRid),
ProjectDirectories?.Any() != true ? null : new XElement(
nameof(ProjectDirectories),
ProjectDirectories
.Select(dir => new XElement("Dir", dir))),
NeverRestoredTarballPrebuilts?.Any() != true ? null : new XElement(
nameof(NeverRestoredTarballPrebuilts),
NeverRestoredTarballPrebuilts
.OrderBy(id => id)
.Select(id => id.ToXElement())),
IgnorePatterns?.Any() != true ? null : new XElement(
nameof(IgnorePatterns),
IgnorePatterns
.Select(p => p.ToXml())),
Usages?.Any() != true ? null : new XElement(
nameof(Usages),
Usages
.OrderBy(u => u.PackageIdentity)
.ThenByOrdinal(u => u.AssetsFile)
.Select(u => u.ToXml())));
