public static T SingleOrDefault <T>(this IDirectiveCollection directives) =>
 directives
 .Where(t => typeof(T).IsAssignableFrom(t.Type.RuntimeType))
 .Select(t => t.ToObject <T>()).SingleOrDefault();
Esempio n. 2
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 private static IReadOnlyCollection <IDirective> GetValidationDirectives(IDirectiveCollection collection)
 {
     return(collection.Where(d => d.Type is IValidationDirectiveType).ToList());
 }