How to use SparkGOR to perform joint-genotyping?

Hi,

After reading all repositories in https://github.com/gorpipe, I still don't know how to use SparkGOR to perform joint-genotyping (like this paper described https://www.biorxiv.org/content/10.1101/2022.10.25.513331v3).

Would you please provide a real world small example to tell user how to perform joint-genotyping (g.vcfs input, joint-called vcf output) ?

Best,
Kun

