FStackTracker ( [StackTrackerUpdateFn](API\Runtime\Core\Containers\FStackTracker\StackTrackerUpdateFn) InUpdateFn, [StackTrackerReportFn](API\Runtime\Core\Containers\FStackTracker\StackTrackerReportFn) InReportFn, [StackTrackerDeleteUserDataFn](API\Runtime\Core\Containers\FStackTracker\StackTrackerDeleteUserDataFn) InDeleteUserDataFn, bool bInIsEnabled )