It depends. Sometimes the marshalling layer doesn't support it, because it's directly unserializing to a native struct via codegen. Often the app 's other types

It depends. Sometimes the marshalling layer doesn't support it, because it's directly unserializing to a native struct via codegen. Often the app 's other types are too rigid to carry extra hierarchical metadata along even if you did unserialize it. And often it's the devs themselves that are averse to anything not rigidly typed or capable of inconsistent or incomplete states, because it's less pure or ergonomic... even though being able to store an incomplete record as a draft is an affordance everyone needs. ie. doesn't matter if Go can unserialize like this if the devs on your team hate the idea