code: def _adj_item_marks(self):
          
          if 'item_marks' in self.kws:
              # Process GO IDs specified in item_marks
              goids = self._get_goids(self.kws['item_marks'])
              # item_marks can take a list of GO IDs on cmdline or in a file.
              #     --item_marks=GO:0043473,GO:0009987
              #     --item_marks=item_marks.txt
              if goids:
                  self.kws['item_marks'] = {go:'>' for go in goids}
              else:
                  raise Exception("NO GO IDs FOUND IN item_marks")
docs: Adjust keywords, if needed.