AppendUint16
status_t AppendUint16(uint16 data);
buffer.AppendUint16(uint16(MX_RECORD));
buffer.AppendUint16(uint16(1));
buffer.AppendUint16(header->id);
buffer.AppendUint16(data);
buffer.AppendUint16(header->q_count);
buffer.AppendUint16(header->ans_count);
buffer.AppendUint16(header->auth_count);
buffer.AppendUint16(header->add_count);
status_t AppendUint16(uint16 value);