SaveSeuratRds vs saveRDS

[royfrancis]

What is the difference between SaveSeuratRds() vs saveRDS()? Is there a difference in how they are used with Seurat v4, v5 and v5 with Sketch objects?

[hdionne]

The code for SaveSeuratRDS() has seems to use saveRDS itself in it, but there there's an additional ~100 lines of code.
The function itself starts at line ~600 of https://github.com/satijalab/seurat-object/blob/master/R/seurat.R
I'm not sure what the code in between does for sure though.