# File lib/snmp/manager.rb, line 63
    def force_next(next_id)
      new_request_id = next_id.to_i
      if new_request_id < 1 || new_request_id >= MAX_REQUEST_ID
        raise "Invalid request id: #{new_request_id}"
      end
      new_request_id = MAX_REQUEST_ID if new_request_id == 1
      @lock.synchronize do
        @request_id = new_request_id - 1
      end
    end