Lazy loading of Zarr from S3

Hi wonder if anyone could help me to understand if this is possible;

ad = anndata.read_zarr('s3://foo/bar/baz.zarr')
qux = ad.varm['qux']

Such that only qux is ever pulled from s3 - and the rest of the data is never moved?

For any arbitrary part of the data structure this is not just varm…