Extract the row array from a MUDAB response. The API always returns a single-key
object wrapping the array, but the key is not reliably the path name (e.g.
/STATION_SMALL -> key V_STATION_SMALL), so we take the first array-valued
property rather than trusting a fixed key. Returns [] for a null/empty reply.
Extract the row array from a MUDAB response. The API always returns a single-key object wrapping the array, but the key is not reliably the path name (e.g.
/STATION_SMALL-> keyV_STATION_SMALL), so we take the first array-valued property rather than trusting a fixed key. Returns[]for a null/empty reply.