# System.Diagnostics.Tracing

``` diff
 namespace System.Diagnostics.Tracing {
     public class EventSourceException : Exception {
-        protected EventSourceException(SerializationInfo info, StreamingContext context);
+        [EditorBrowsableAttribute(EditorBrowsableState.Never)]
+        [ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
+        protected EventSourceException(SerializationInfo info, StreamingContext context);
     }
 }
```

