code: def follow_bytes(self, s, index):
          "Follows transitions."
          for ch in s:
              index = self.follow_char(int_from_byte(ch), index)
              if index is None:
                  return None
  
          return indef follow_bytes(self, s, index):
          "Follows transitions."
          for ch in s:
              index = self.follow_char(int_from_byte(ch), index)
              if index is None:
                  return None
  
          return index
docs: Follows transitions.