# System.Diagnostics.Tracing

``` diff
 namespace System.Diagnostics.Tracing {
     public abstract class DiagnosticCounter : IDisposable {
+        public string DisplayUnits { get; set; }
     }
     public class EventCounter : DiagnosticCounter {
+        public override string ToString();
     }
     public class IncrementingEventCounter : DiagnosticCounter {
+        public override string ToString();
     }
     public class IncrementingPollingCounter : DiagnosticCounter {
+        public override string ToString();
     }
     public class PollingCounter : DiagnosticCounter {
+        public override string ToString();
     }
 }
```

