code: def get_change_logs(self, start_pos=0):
      for i, t in enumerate(self.tokens):
          self.tokens[i].update_last_token(start_pos)
  
          start_pos += len(t.get_latest_token().token)
          if len(t.get_latest_token().token) > 0:
              # TODO: for textual only
              start_pos += 1
  
      change_logs = [t for t in self.tokens if t.is_changed()]
      change_logs.sort(key=lambda x: x.get_latest_token().change_seq)
      return [c.to_changed_dict() for c in change_logs]
  
file_path: nlpaug/nlpaug/util/doc/doc.py
imports: from nlpaug.util.doc.token import Token
  from nlpaug.util.doc.change_log import ChangeLog
label_desc: Use image node_id 11 for calling the Doc obj's underlying member method code with example usage: obj.get_change_logs(start_pos) and returns: unknown