/// <summary>
/// Add a random number generator to the package.
/// </summary>
public static void AddRandomNumberGeneratorFeature(this OpenXmlPackage package)
{
if (package.Features.Get <IRandomNumberGeneratorFeature>() is null)
{
package.AddDisposableFeature();
package.Features.SetDisposable <IRandomNumberGeneratorFeature>(new RandomNumberGeneratorFeature());
}
}