public void DeserializeProperty( BsonReader bsonReader, object obj, BsonPropertyMap propertyMap ) { var bsonType = bsonReader.PeekBsonType(); BsonJavaScript value; if (bsonType == BsonType.Null) { bsonReader.ReadNull(propertyMap.ElementName); value = null; } else { value = new BsonJavaScript(bsonReader.ReadJavaScript(propertyMap.ElementName)); } propertyMap.Setter(obj, value); }