# System.Net

``` diff
 namespace System.Net {
     public class FtpWebResponse : WebResponse, IDisposable {
-        public override string ContentType { get; }

     }
     public class IPAddress {
-        public static IPAddress Parse(ReadOnlySpan<char> ipString);
+        public static IPAddress Parse(ReadOnlySpan<char> ipSpan);
-        public static bool TryParse(ReadOnlySpan<char> ipString, out IPAddress address);
+        public static bool TryParse(ReadOnlySpan<char> ipSpan, out IPAddress address);
     }
     public class NetworkCredential : ICredentials, ICredentialsByHost {
-        public NetworkCredential GetCredential(Uri uri, string authType);
+        public NetworkCredential GetCredential(Uri uri, string authenticationType);
     }
     public class WebHeaderCollection : NameValueCollection, IEnumerable, ISerializable {
-        public new string this[string name] { get; set; }

     }
 }
```

