Close-your-eyes

## initially based on orthologsBioMART::findOrthologs from https://github.com/vitkl/orthologsBioMART
## boiled down to essentially reproduce and extend this table: ProjecTILs::Hs2Mm.convert.table

features <- c() # select human features to find orthologs for; e.g. rownames(Seurat::GetAssayData(SO, slot = "data", assay = "RNA"))

# use biomart to map orthologs
hs_mart <- biomaRt::useMart("ensembl", dataset="hsapiens_gene_ensembl")
#mm_mart <- biomaRt::useMart("ensembl", dataset="mmusculus_gene_ensembl") # not needed

hs_ids <- biomaRt::getBM(attributes = unique(c("hgnc_symbol", "ensembl_gene_id")),