fn interleave_updates<T: Codec64, D: Codec64>(
updates: &[&BlobTraceUpdates],
elements: impl IntoIterator<Item = ((usize, usize), T, D)>,
) -> BlobTraceUpdates
fn interleave_updates<T: Codec64, D: Codec64>(
updates: &[&BlobTraceUpdates],
elements: impl IntoIterator<Item = ((usize, usize), T, D)>,
) -> BlobTraceUpdates