assertEquals(SWISS_GERMAN_HELLO, field.getBody());
ByteArrayOutputStream outstream = new ByteArrayOutputStream();
DefaultMessageWriter writer = new DefaultMessageWriter();
writer.writeHeader(header, outstream);
byte[] b = outstream.toByteArray();
ByteArrayBuffer buf = new ByteArrayBuffer(b.length);
buf.append(b, 0, b.length);
String s = ContentUtil.decode(buf);