OptionalblockedAnfragen discovery found in the window.
Document downloads a sync would make: URLs whose bytes the corpus does not hold.
OptionalestimateAbsent when nothing is to be fetched or nothing could be measured.
Of those, the ones whose record the corpus holds already.
OptionalselectedWith a selection (--ref, --retry-failed, --only-new): how many of the discovered a sync would handle.
Why the source did not look at all (
DiscoverResult.blocked); the counts are then 0 by refusal, not by finding nothing.