The DraftCXU model includes is_assumption and parent_assumption_ids fields so that a CXU can indicate whether it is an assumption and record its assumption lineage.

is_assumption: bool

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

parent_assumption_ids: list

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

DraftCXU:

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md