WritableByteChannel channel = Channels.newChannel(outstream);
HttpParams params = new BasicHttpParams();
SessionOutputBuffer outbuf = new SessionOutputBufferImpl(1024, 128, params);
HttpTransportMetricsImpl metrics = new HttpTransportMetricsImpl();
ContentEncoder encoder = new MockupEncoder(channel, outbuf, metrics);
SimpleOutputBuffer buffer = new SimpleOutputBuffer(4, new DirectByteBufferAllocator());
buffer.write(EncodingUtils.getAsciiBytes("stuff"));
buffer.write(';');