public byte[] GetModelRaw()
{
int length;
IntPtr dumpPtr;
int output = XGBoostNative.XGBoosterGetModelRaw(handle, out length, out dumpPtr);
if (output == -1)
{
throw new DllFailException(XGBoostNative.XGBGetLastError());
}
byte[] modelBytes = new byte[length];
Marshal.Copy(dumpPtr, modelBytes, 0, length);
return(modelBytes);
}