System.Net.Http.Headers/AuthenticationHeaderValue.cs
System.Net.Http.Headers/CacheControlHeaderValue.cs
System.Net.Http.Headers/CollectionExtensions.cs
+System.Net.Http.Headers/CollectionParser.cs
System.Net.Http.Headers/ContentDispositionHeaderValue.cs
System.Net.Http.Headers/ContentRangeHeaderValue.cs
System.Net.Http.Headers/EntityTagHeaderValue.cs