serialize method

@override ByteData serialize()

Implementation

@override
ByteData serialize() {
  var data_ = ByteData(mavlinkEncodedLength);
  data_.setUint64(0, timeUsec, Endian.little);
  data_.setUint32(8, groupId, Endian.little);
  data_.setUint32(12, missionChecksum, Endian.little);
  return data_;
}