static [UE::FUsdStage](API\Plugins\UnrealUSDWrapper\UsdWrappers\FUsdStage) OpenStage ( [UE::FSdfLayer](API\Plugins\UnrealUSDWrapper\UsdWrappers\FSdfLayer) RootLayer, [UE::FSdfLayer](API\Plugins\UnrealUSDWrapper\UsdWrappers\FSdfLayer) SessionLayer, [EUsdInitialLoadSet](API\Plugins\UnrealUSDWrapper\EUsdInitialLoadSet) InitialLoadSet, bool bUseStageCache, bool bForceReloadLayersFromDisk )