Remove "Module" in class name. Change class to internal.

.publicApi/Microsoft.ApplicationInsights.dll/net452/PublicAPI.Unshipped.txt

@@ -1,7 +1,4 @@
 Microsoft.ApplicationInsights.Channel.IAsyncFlushable
 Microsoft.ApplicationInsights.Channel.IAsyncFlushable.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
 Microsoft.ApplicationInsights.Channel.InMemoryChannel.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
-Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule
-Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule.Dispose() -> void
-Microsoft.ApplicationInsights.TelemetryClient.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
-static Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule.EnsureInitialized() -> void
+Microsoft.ApplicationInsights.TelemetryClient.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>

.publicApi/Microsoft.ApplicationInsights.dll/net46/PublicAPI.Unshipped.txt

@@ -1,7 +1,4 @@
 Microsoft.ApplicationInsights.Channel.IAsyncFlushable
 Microsoft.ApplicationInsights.Channel.IAsyncFlushable.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
 Microsoft.ApplicationInsights.Channel.InMemoryChannel.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
-Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule
-Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule.Dispose() -> void
-Microsoft.ApplicationInsights.TelemetryClient.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
-static Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule.EnsureInitialized() -> void
+Microsoft.ApplicationInsights.TelemetryClient.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>

.publicApi/Microsoft.ApplicationInsights.dll/netstandard2.0/PublicAPI.Unshipped.txt

@@ -1,7 +1,4 @@
 Microsoft.ApplicationInsights.Channel.IAsyncFlushable
 Microsoft.ApplicationInsights.Channel.IAsyncFlushable.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
 Microsoft.ApplicationInsights.Channel.InMemoryChannel.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
-Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule
-Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule.Dispose() -> void
-Microsoft.ApplicationInsights.TelemetryClient.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>
-static Microsoft.ApplicationInsights.Extensibility.Implementation.Tracing.SelfDiagnosticsModule.EnsureInitialized() -> void
+Microsoft.ApplicationInsights.TelemetryClient.FlushAsync(System.Threading.CancellationToken cancellationToken) -> System.Threading.Tasks.Task<bool>

BASE/src/Microsoft.ApplicationInsights/Extensibility/Implementation/Tracing/SelfDiagnostics.cs

@@ -6,18 +6,18 @@
     /// Self diagnostics class captures the EventSource events sent by Application Insights
     /// modules and writes them to local file for internal troubleshooting.
     /// </summary>
-    public class SelfDiagnosticsModule : IDisposable
+    internal class SelfDiagnostics : IDisposable
     {
         /// <summary>
         /// Long-living object that hold relevant resources.
         /// </summary>
-        private static readonly SelfDiagnosticsModule Instance = new SelfDiagnosticsModule();
+        private static readonly SelfDiagnostics Instance = new SelfDiagnostics();
 
         // Long-living object that holds a refresher which checks whether the configuration file was updated
         // every 10 seconds.
         // private readonly SelfDiagnosticsConfigRefresher configRefresher;
 
-        static SelfDiagnosticsModule()
+        static SelfDiagnostics()
         {
             AppDomain.CurrentDomain.ProcessExit += (sender, eventArgs) =>
             {
@@ -25,7 +25,7 @@
             };
         }
 
-        private SelfDiagnosticsModule()
+        private SelfDiagnostics()
         {
             // this.configRefresher = new SelfDiagnosticsConfigRefresher();
         }

BASE/src/Microsoft.ApplicationInsights/Extensibility/TelemetryConfiguration.cs

@@ -64,7 +64,7 @@
                     Activity.ForceDefaultIdFormat = true;
                 }                
             });
-            SelfDiagnosticsModule.EnsureInitialized();
+            SelfDiagnostics.EnsureInitialized();
         }
 
         /// <summary>