Hello, using LinkedHashMap should be an optional feature which is disabled by default, due to possible performance degradation in some usecases (LinkedHashMap is slower than HashMap). So please make ordering toggle-able in SchemaLoaderBuilder, and instantiate HashMap / LinkedHashMap depending on the feature toggle during the schema loading process. For that you can start looking at ObjectSchemaLoader:59.
I think it is enough for now to implement order-keeping for "properties".