Also new mypy-reported errors in the IntAct transform:
kg_covid_19/transform_utils/intact/intact.py:171: error: Item "Node" of "Optional[Node]" has no attribute "_data" [union-attr]
kg_covid_19/transform_utils/intact/intact.py:171: error: Item "None" of "Optional[Node]" has no attribute "_data" [union-attr]
kg_covid_19/transform_utils/intact/intact.py:356: error: Item "Node" of "Optional[Node]" has no attribute "data" [union-attr]
kg_covid_19/transform_utils/intact/intact.py:356: error: Item "None" of "Optional[Node]" has no attribute "data" [union-attr]
Also new mypy-reported errors in the IntAct transform: