void AddRequiredBones ( const [FReferenceSkeleton](API\Runtime\Engine\FReferenceSkeleton) & RefSkel, int32 SkeletonBoneIndex, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & VirtualParentTable, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & OutBonesAdded )