serialize method
Implementation
@override
ByteData serialize() {
var data_ = ByteData(mavlinkEncodedLength);
data_.setInt32(0, safeReturn, Endian.little);
data_.setInt32(4, land, Endian.little);
data_.setInt32(8, missionNextItem, Endian.little);
data_.setInt32(12, missionEnd, Endian.little);
data_.setInt32(16, commandedAction, Endian.little);
return data_;
}