code: def syllabify(self, hierarchy):
          
          if len(self.long_lines) == 0:
              logger.error("No text was imported")
              self.syllabified_text = []
          else:
              syllabifier = Syllabifier(language="old_norse", break_geminants=True)
              syllabifier.set_hierarchy(hierarchy)
              syllabified_text = []
              for i, long_line in enumerate(self.long_lines):
                  syllabified_text.append([])
                  for short_line in long_line:
                      assert isinstance(short_line, ShortLine) or isinstance(short_line, LongLine)
                      short_line.syllabify(syllabifier)
                      syllabified_text[i].append(short_line.syllabified)
              self.syllabified_text = syllabified_text
docs: Syllables may play a role in verse classification.