serialize method
Implementation
@override
ByteData serialize() {
var data_ = ByteData(mavlinkEncodedLength);
data_.setFloat32(0, airspeed, Endian.little);
data_.setFloat32(4, groundspeed, Endian.little);
data_.setFloat32(8, alt, Endian.little);
data_.setFloat32(12, climb, Endian.little);
data_.setInt16(16, heading, Endian.little);
data_.setUint16(18, throttle, Endian.little);
return data_;
}