async fn monotonic_append<T: Timestamp + Lattice + Codec64 + TimestampManipulation>(
write_handle: &mut WriteHandle<SourceData, (), T, StorageDiff>,
updates: Vec<TimestamplessUpdate>,
at_least: T,
)async fn monotonic_append<T: Timestamp + Lattice + Codec64 + TimestampManipulation>(
write_handle: &mut WriteHandle<SourceData, (), T, StorageDiff>,
updates: Vec<TimestamplessUpdate>,
at_least: T,
)