Pangenome graph annotation tools

[atomemeteore]

Hello :
I sucessfully created a pangenome graph for differents chromosomes 1 (and others) of Brassica oleracea varieties.

If you want a reference, here is one pggb result obtained : https://drive.google.com/drive/folders/1kdyqLPhc6dezEdd0MDf1sTXiTUX14-BK?usp=sharing

I was wondering if there was any annotation tools for the output results that I could use to add annotations.
If possible, I would want to add annotations of genes of interest thanks to a gff file, but if it's not possible, I would like to add any supplemental informations that is possible.

Thank you very much.