Nesting of JsonObjects from multiple JsonDocuments without deep copy (shallow)

Created by: smuellener

Hi

According to the ArduinoJsonEBook the JsonObject has reference semantics. Is it possible to nest a JsonObject from a JsonDocument within a different JsonDocument without copying the entire content?

The following shows my intention:

https://wandbox.org/permlink/oQi9ypThsoGRLYLA

If yes, how can this be done and if no would this be an improvement to consider?

Thanks!