@Override
    public void sent(final long bytes) {
        this.increment();
    }
@Test
    public void testSent() {
        final DownloadTransfer transfer = new DownloadTransfer(new Host(new TestProtocol()), Collections.<TransferItem>emptyList());
        final TerminalStreamListener l = new TerminalStreamListener(new TransferSpeedometer(transfer));
        l.sent(1L);
        transfer.addSize(1L);
        l.sent(1L);
    }