static [ULevelSequence](API\Runtime\LevelSequence\ULevelSequence) * CreateSubSequenceForSource ( [ULevelSequence](API\Runtime\LevelSequence\ULevelSequence) * InRootSequence, const [FString](API\Runtime\Core\Containers\FString) & SubSequenceTrackName, const [FString](API\Runtime\Core\Containers\FString) & SubSequenceAssetName )