Small comments

Author: papafe

src/MongoDB.Driver/CreateCollectionOptions.cs

@@ -127,7 +127,7 @@ public bool? NoPadding
             set { _noPadding = value; }
         }
 
-        //DOMAIN-API We need to remove this, and have only the SerializationDomain property.
+        //DOMAIN-API We need to remove this, and have only the SerializationDomain property. When we have builder, we will add Obsolete
         //We should also decide if we even need any of those two properties.
         /// <summary>
         /// Gets or sets the serializer registry.

src/MongoDB.Driver/MongoDatabase.cs

@@ -668,8 +668,11 @@ private IWriteOperation<BsonDocument> CreateCreateCollectionOperation<TDocument>
                 new(documentSerializer, serializerRegistry, translationOptions: translationOptions) :
                 new(documentSerializer, options.SerializationDomain, translationOptions: translationOptions);
 
+            //var serializationDomain = Settings.SerializationDomain.WithSerializerRegistry(serializerRegistry);  //FP This could be the way to go
+
             //DOMAIN-API This will need to go away
-            var clusteredIndex = options.SerializationDomain is null?  options.ClusteredIndex?.Render(documentSerializer, serializerRegistry, translationOptions):
+            var clusteredIndex = options.SerializationDomain is null?
+                options.ClusteredIndex?.Render(documentSerializer, serializerRegistry, translationOptions):
                 options.ClusteredIndex?.Render(documentSerializer, options.SerializationDomain, translationOptions);
 
             var validator = options.Validator?.Render(renderArgs);