Summary
Maps a JSON object to a unique identifier string.
Remarks
The identifier could be derived from a specific property, a combination of properties, or a computed hash.
It's critical that this function:
1. Produces a truly unique value for each distinct object of this type
2. Never maps two different objects to the same ID
3. Is deterministic - always returns the same ID when applied to the same object
If you can just use a UUID or other guaranteed unique identifier.