Made something internal

Author: papafe

src/MongoDB.Bson/IO/IBsonReader.cs

@@ -246,11 +246,6 @@ public interface IBsonReader : IDisposable
         /// <param name="bookmark">The bookmark.</param>
         void ReturnToBookmark(BsonReaderBookmark bookmark);
 
-        /// <summary>
-        /// Gets the settings of the reader.
-        /// </summary>
-        BsonReaderSettings Settings { get;  }
-
         /// <summary>
         /// Skips the name (reader must be positioned on a name).
         /// </summary>

src/MongoDB.Bson/Serialization/BsonDeserializationContext.cs

@@ -41,7 +41,7 @@ private BsonDeserializationContext(
             _allowDuplicateElementNames = allowDuplicateElementNames;
             _dynamicArraySerializer = dynamicArraySerializer;
             _dynamicDocumentSerializer = dynamicDocumentSerializer;
-            _serializationDomain = reader.Settings?.SerializationDomain ?? BsonSerializer.DefaultSerializationDomain;
+            _serializationDomain = (reader as BsonReader)!.Settings?.SerializationDomain ?? BsonSerializer.DefaultSerializationDomain;
         }
 
         // public properties
@@ -59,7 +59,7 @@ public bool AllowDuplicateElementNames
         /// <summary>
         /// //TODO
         /// </summary>
-        public IBsonSerializationDomain SerializationDomain => _serializationDomain;
+        internal IBsonSerializationDomain SerializationDomain => _serializationDomain;
 
         /// <summary>
         /// Gets the dynamic array serializer.

src/MongoDB.Bson/Serialization/BsonSerializationContext.cs

@@ -39,11 +39,10 @@ private BsonSerializationContext(
         }
 
         // public properties
-
         /// <summary>
         /// //TODO
         /// </summary>
-        public IBsonSerializationDomain SerializationDomain => _serializationDomain;
+        internal IBsonSerializationDomain SerializationDomain => _serializationDomain;
 
         /// <summary>
         /// Gets a function that, when executed, will indicate whether the type