code: @Override
      public void encode(IoSession session, Object message,
              ProtocolEncoderOutput out) throws Exception {
          out.write(message);
      }
docs: /*
  @see org.apache.mina.filter.codec.ProtocolEncoder#
  encode(org.apache.mina.core.session.IoSession, java.lang.Object, org.apache.mina.filter.codec.ProtocolEncoderOutput)