How To Manage File System ACLs With PowerShell

I have tried How To Manage File System ACLs With PowerShell
link http://www.tomsitpro.com/articles/powershell-manage-file-system-acl,2-837.html

I am unable to get the last part to run any help will be appreciated
http://www.tomsitpro.com/articles/powershell-manage-file-system-acl,2-837.html

First part
((Get-Item c:\test).GetAccessControl('Access')).Access

Second part
[PS] C:\Windows\system32>((Get-ChildItem c:\test -Directory).GetAccessControl('Access')).Access
Get-ChildItem : A parameter cannot be found that matches parameter name 'Directory'.
At line:1 char:35
+ ((Get-ChildItem c:\test -Directory <<<< ).GetAccessControl('Access')).Access
    + CategoryInfo          : InvalidArgument: (:) [Get-ChildItem], ParameterBindingException
    + FullyQualifiedErrorId : NamedParameterNotFound,Microsoft.PowerShell.Commands.GetChildItemCommand