onQueryValue function
Watches a node through a query.
Implementation
Stream<DbSnapshot> onQueryValue(String path, DbQuery query) => _listenWith(
path,
query,
'onQueryValue',
fdbDbQueryListen,
(bytes, seq) => DbSnapshot(
seq: seq,
value: decodeSnapshotValue(bytes),
postedNs: ByteData.sublistView(bytes).getInt64(16, Endian.host),
order: decodeSnapshotOrder(bytes),
),
);