public XGBooster(string fileName, int silent = 1)
{
IntPtr tempPtr;
var newBooster = XGBoostNative.XGBoosterCreate(null, 0, out tempPtr);
var output = XGBoostNative.XGBoosterLoadModel(tempPtr, fileName);
if (output == -1)
{
throw new DllFailException(XGBoostNative.XGBGetLastError());
}
handle = tempPtr;
}