# File lib/snmp/manager.rb, line 61
    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