serialize method
Implementation
@override
ByteData serialize() {
var data_ = ByteData(mavlinkEncodedLength);
data_.setUint64(0, timeUsec, Endian.little);
data_.setFloat32(8, radius, Endian.little);
data_.setInt32(12, x, Endian.little);
data_.setInt32(16, y, Endian.little);
data_.setFloat32(20, z, Endian.little);
data_.setUint8(24, frame);
return data_;
}