Sitecore PowerShell Extensions Creating Functions

Creating a function. Code below.

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function Clear-SCArchive {     <#         .SYNOPSIS              Clears entries from the archive. Defaults to a 30 retention period for the recyclebin.                        .EXAMPLE             Remove all items 30 days or older.                           PS master:\> Clear-SCArchive                       .NOTES             Michael West             michaellwest.blogspot.com             @MichaelWest101               about_Comment_Based_Help             about_Comparison_Operators             about_Functions_Advanced             about_Functions_Advanced_Parameters             about_Functions_CmdletBindingAttribute     #>     [CmdletBinding()]     param(         [ValidateNotNullOrEmpty()]         [string]$Name = "recyclebin",                   [int]$Days = 30     )           $expired = [datetime]::Now.AddDays(-1 * [Math]::Abs($Days))           foreach($archive in Get-Archive -Name $Name) {         $entries = $archive.GetEntries(0, $archive.GetEntryCount())         foreach($entry in $entries){             if($entry.ArchiveLocalDate -le $expired) {                 Write-Log "Removing item: $($entry.ArchivalId)"                 $archive.RemoveEntries($entry.ArchivalId)             } else {                 Write-Verbose "Skipping $($entry.Name) on date $($entry.ArchiveLocalDate)"             }         }     } }