Unable to obtain an NGFF metadata from a validated zarr.

[odinsbane]

I'm not sure if I am accessing the metadata incorrectly or if the metadata is not being loaded correctly. To get the multiscales data, scale, translate, axis I use this.

    N5Metadata rootMetadata = N5MetadataUtils.parseMetadata(reader, "/");
    System.out.println("root metadata: " + rootMetadata);
    if(rootMetadata instanceof OmeNgffMetadata){
        OmeNgffMetadata metadata = (OmeNgffMetadata)rootMetadata;
        for ( OmeNgffMultiScaleMetadata md : metadata.multiscales ){
            System.out.println(md);
        }
    }

When I open zarr files generated by the java n5 or ome-zarr then I get OmeNgffMetadata back.

When I use I used the ngff_zarr python package to create a zarr file. The resulting zarr file validates with

ome_zarr view testing.zarr

When I load the zarr from java I do not get any metadata back for the root, I also try to get the metadata per dataset.

    String[] sets = reader.deepListDatasets("/");
    for(String s: sets){
        N5Metadata n5md = N5MetadataUtils.parseMetadata(reader, s);
        System.out.println(n5md);

In the broken case the metadata is N5DefaultSingleScaleMetadata and I cannot access the values I want

        if(n5md instanceof N5DefaultSingleScaleMetadata){
            N5DefaultSingleScaleMetadata def = (N5DefaultSingleScaleMetadata) n5md;

I check the attributes and I cannot find what I need.

            Map<String, Object> objs = def.getAttributes().asMap();
            for(Map.Entry<String, Object> row : objs.entrySet()){
                System.out.println("row: " + row);
            }

The data is in the zarr file. I generated the data using the code found on an issue. When I run the code in the issue using ngff-zarr==0.12.0 and zarr==2.18.4 I get a valid zarr v2. testing.zarr.tar.gz

Will this library support zarr v3?