[dotnet] [bidi] Make DisposeAsyncCore protected

Author: nvborisenko

dotnet/src/webdriver/BiDi/BiDi.cs

@@ -80,14 +80,14 @@ public Task EndAsync(Modules.Session.EndOptions? options = null)
         return SessionModule.EndAsync(options);
     }
 
-    public virtual async ValueTask DisposeAsyncCore()
-    {
-        await _broker.DisposeAsync().ConfigureAwait(false);
-    }
-
     public async ValueTask DisposeAsync()
     {
         await DisposeAsyncCore();
         GC.SuppressFinalize(this);
     }
+
+    protected virtual async ValueTask DisposeAsyncCore()
+    {
+        await _broker.DisposeAsync().ConfigureAwait(false);
+    }
 }

dotnet/src/webdriver/BiDi/Communication/Broker.cs

@@ -302,7 +302,13 @@ public async Task UnsubscribeAsync(Modules.Session.Subscription subscription, Ev
         }
     }
 
-    public virtual async ValueTask DisposeAsyncCore()
+    public async ValueTask DisposeAsync()
+    {
+        await DisposeAsyncCore();
+        GC.SuppressFinalize(this);
+    }
+
+    protected virtual async ValueTask DisposeAsyncCore()
     {
         _pendingEvents.CompleteAdding();
 
@@ -315,10 +321,4 @@ public virtual async ValueTask DisposeAsyncCore()
 
         _transport.Dispose();
     }
-
-    public async ValueTask DisposeAsync()
-    {
-        await DisposeAsyncCore();
-        GC.SuppressFinalize(this);
-    }
 }