Read berlin, berlin@2025-01-01..2025-12-31, bund@period=21,
bund@2026-01-01..,limit=50 or sachsen-anhalt@2023-01-01..,ref=08/2391,ref=08/2390. The window obeys normalizeSyncWindow; whether the
key names a source is the caller's sourceProblem (the registry's rule), since
this package does not know the registry. Throws OpenKaValidationError.
Read
berlin,berlin@2025-01-01..2025-12-31,bund@period=21,bund@2026-01-01..,limit=50orsachsen-anhalt@2023-01-01..,ref=08/2391,ref=08/2390. The window obeysnormalizeSyncWindow; whether the key names a source is the caller'ssourceProblem(the registry's rule), since this package does not know the registry. ThrowsOpenKaValidationError.