code: def get_desc2nts(self, **kws_usr):
          
          # desc2nts contains: (sections hdrgo_prt sortobj) or (flat hdrgo_prt sortobj)
          # keys_nts: hdrgo_prt section_prt top_n use_sections
          kws_nts = {k:v for k, v in kws_usr.items() if k in self.keys_nts}
          return self.get_desc2nts_fnc(**kws_nts)
docs: Return grouped, sorted namedtuples in either format: flat, sections.