OptionalapiOptionalforceIgnore cached validators and re-read the upstream feed. Without this a source
that answers 304 would report "nothing changed" even when the caller asked for
a full re-extraction, which makes ka sync --force silently do nothing.
OptionalignoreFetch from a server whose robots.txt disallows it.
Off by default, and never inferred: it is a flag the operator typed. Two Länder publish their Drucksachen openly and disallow every client in robots.txt, so this is the switch that decides whether their documents can be read at all. It is not silent — the run warns, once per host, that it was used. The records do not carry that warning.
OptionallimitStop after this many refs.
OptionalperiodRestrict to one legislative period.
OptionalrobotsThe run's robots.txt policy, when the caller has one. A connector that gates its
discovery on a document server (robotsGate) asks this one, so the pipeline's
later per-document checks reuse the same reading of the file: one robots.txt
request per host per run, and no chance of two different answers in one run.
OptionalsinceOnly Anfragen dated on or after this ISO date.
Per-source state from the corpus: conditional-request validators and history.
OptionalstoreThe corpus, for a source that consumes a frozen artifact the factory built. Only Niedersachsen needs it, to read the question→answer map its sweep produces; discovery still never writes to the store.
OptionaluntilOnly Anfragen dated on or before this ISO date.
Credential for sources that need one, already resolved from flag or env.