How to use the pyulog.core.ULog.MessageDropout function in pyulog

self._filtered_message_ids.add(msg_add_logged.msg_id)
                    elif header.msg_type == self.MSG_TYPE_LOGGING:
                        msg_logging = self.MessageLogging(data, header)
                        self._logged_messages.append(msg_logging)
                    elif header.msg_type == self.MSG_TYPE_LOGGING_TAGGED:
                        msg_log_tagged = self.MessageLoggingTagged(data, header)
                        if msg_log_tagged.tag in self._logged_messages_tagged:
                            self._logged_messages_tagged[msg_log_tagged.tag].append(msg_log_tagged)
                        else:
                            self._logged_messages_tagged[msg_log_tagged.tag] = [msg_log_tagged]
                    elif header.msg_type == self.MSG_TYPE_DATA:
                        msg_data.initialize(data, header, self._subscriptions, self)
                        if msg_data.timestamp != 0 and msg_data.timestamp > self._last_timestamp:
                            self._last_timestamp = msg_data.timestamp
                    elif header.msg_type == self.MSG_TYPE_DROPOUT:
                        msg_dropout = self.MessageDropout(data, header,
                                                          self._last_timestamp)
                        self._dropouts.append(msg_dropout)
                    elif header.msg_type == self.MSG_TYPE_SYNC:
                        self._sync_seq_cnt = self._sync_seq_cnt + 1
                    else:
                        if self._debug:
                            print('_read_file_data: unknown message type: %i (%s)' %
                                  (header.msg_type, chr(header.msg_type)))
                            print('file position: %i msg size: %i' % (
                                curr_file_pos, header.msg_size))

                        if self._check_packet_corruption(header):
                            # seek back to advance only by a single byte instead of
                            # skipping the message
                            curr_file_pos = self._file_handle.seek(-2-header.msg_size, 1)