fn append_metadata_to_value<'scope, T: Timestamp, FromTime: Timestamp>(
results: VecCollection<'scope, T, DecodeResult<FromTime>, Diff>,
) -> VecCollection<'scope, T, KV, Diff>fn append_metadata_to_value<'scope, T: Timestamp, FromTime: Timestamp>(
results: VecCollection<'scope, T, DecodeResult<FromTime>, Diff>,
) -> VecCollection<'scope, T, KV, Diff>