fn append_metadata_to_value<G: Scope, FromTime: Timestamp>(
results: VecCollection<G, DecodeResult<FromTime>, Diff>,
) -> VecCollection<G, KV, Diff>fn append_metadata_to_value<G: Scope, FromTime: Timestamp>(
results: VecCollection<G, DecodeResult<FromTime>, Diff>,
) -> VecCollection<G, KV, Diff>