code: def _get_grprobj(self, goids, sections):
          
          grprdflt = GrouperDflts(self.gosubdag, "goslim_generic.obo")
          hdrobj = HdrgosSections(self.gosubdag, grprdflt.hdrgos_dflt, sections)
          return Grouper("sections", goids, hdrobj, self.gosubdag)
docs: Get Grouper, given GO IDs and sections.