TaskContinuationOptions
AttachedToParent = 4
ExecuteSynchronously = 524288
LongRunning = 2
None = 0
NotOnCanceled = 262144
NotOnFaulted = 131072
NotOnRanToCompletion = 65536
OnlyOnCanceled = 196608
OnlyOnFaulted = 327680
OnlyOnRanToCompletion = 393216
PreferFairness = 1