OptionallimitOptionalonlySkip every Anfrage the corpus holds with all its documents, without a request for it; what is missing, or stored without a document, is handled.
OptionalperiodOptionalrefsHandle only these references of the window, and the ones they were filed under
before (DocRef.formerly). With retryFailed too, either one selects.
OptionalretryHandle only the Anfragen whose last attempt failed (SourceState.failed).
OptionalsinceOptionaluntil
A job as written: a source key and the window it syncs.