Extension classes carry no definitions

https://kerfors.github.io/usdm-overlay/id/finding/extension-attributes-undefined

ExtensionAttribute and ExtensionClass have no rows in USDM_CT.xlsx and no definitions in usdm-rdf. No published example uses them.

standing
Ready to raise: Two classes in the published model have no definitions in any published artefact.
evidence
Model-stated
holds
true
observation
USDM_CT.xlsx rows for these classes: 0. usdm-rdf properties: 17, with skos:definition: 0. Instances in the published examples: 0.
about
ExtensionAttribute, ExtensionClass
sources
https://github.com/cdisc-org/DDF-RA/blob/v4.0.0/Deliverables/CT/USDM_CT.xlsx
https://github.com/cdisc-org/DDF-RA/tree/v4.0.0/Documents/Examples
https://github.com/kerfors/usdm-rdf/blob/v0.7.1/usdm_v4.ttl

Test

Check function extension_attributes_undefined in scripts/check_findings.py.