Optional ReadonlyburnOptional ReadonlyexogenousGARCH-X's x for every garch and gjr model; an egarch one is fitted without it.
ReadonlyhorizonOptional ReadonlymeanEvery model's mean: a fitted constant (default) or zero.
Optional ReadonlyminOptional ReadonlymodelsReadonlyreturnsOptional ReadonlystepOptional ReadonlytargetVariance targeting for every garch and gjr model; an egarch one is fitted with ω free.
weightedForecast's question: the returns, the horizon, the windows and the models to weigh.