true if items contained in the subfolders should be returned; false if only items that are immediate children of the folder should be returned.
Return Value
An array of FileSystemItem objects representing the items contained in the folder.
Requirements
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2