bool PopulateLinearizedItems ( [TArrayView](API\Runtime\Core\Containers\TArrayView)< const ItemType > InItemsSource, [TArray](API\Runtime\Core\Containers\TArray)< ItemType > & InLinearizedItems, [TArray](API\Runtime\Core\Containers\TArray)< [FItemInfo](API\Runtime\Slate\Widgets\Views\FItemInfo) > & NewDenseItemInfos, [TBitArray](API\Runtime\Core\Containers\TBitArray)<> NeedsParentWire, [TItemSet](API\Editor\UnrealEd\Editor\SListView\TItemSet) & OutNewSelectedItems, [TSparseItemMap](API\Editor\UnrealEd\STreeView\TSparseItemMap) & NewSparseItemInfo, bool bAddingItems, int32 ParentIndex )