Data hosting can be external and inactionable

[mih]

https://search.kg.ebrains.eu/instances/fadcd2cb-9e8b-4e01-9777-f4d4df8f1ebc has this

>>> dvr = kg_dsver.repository.resolve(self.client)
'https://www.nitrc.org/frs/?group_id=1081'

>>> (Pdb) p list(self.iter_files(dvr))
# 30s latency
[]

We should report this, and skip such versions. There is no knowledge about the dataset file content in the KG.

Here is another, different example https://search.kg.ebrains.eu/instances/d07f9305-1e75-4548-a348-b155fb323d31