Returns filesystem entries older than N days

Get-OldItem.ps1

function Get-OldItem {
    [CmdletBinding()]
    [OutputType([System.IO.FileSystemInfo])]
    param   (
        [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
        [Alias('FullName')]
        [System.IO.FileSystemInfo]
        $Path,
        [Parameter()]
        [int]
        $Days   =   30,
        [Parameter()]
        [ValidateSet('CreationTime','LastAccessTime','LastWriteTime','CreationTimeUtc','LastAccessTimeUtc','LastWriteTimeUtc')]
        [string]
        $Property   =   'LastWriteTimeUtc'
    )
    begin   {
        if  ($Property.EndsWith('Utc',[System.StringComparison]::InvariantCultureIgnoreCase))   {
            [datetime]$dateToCompare    =   [datetime]::UtcNow.Date.AddDays(-$Days)
        }
        else {
            [datetime]$dateToCompare    =   [datetime]::Now.Date.AddDays(-$Days)
        }
    }
    process {
        if  (-not   $Path.Exists)   {   return  }
        [datetime]$dateOfItem   =   $Path.$Property
        [int]$comparisonResult  =   $dateToCompare.CompareTo($dateOfItem)
        [bool]$isOlderThan      =   $comparisonResult   -ge 0
        <#
        switch  ($comparisonResult) {
            -1      {   [System.ConsoleColor]$fgColor   =   [System.ConsoleColor]::Magenta  }
            0       {   [System.ConsoleColor]$fgColor   =   [System.ConsoleColor]::White    }
            1       {   [System.ConsoleColor]$fgColor   =   [System.ConsoleColor]::Cyan     }
            Default {   [System.ConsoleColor]$fgColor   =   [System.ConsoleColor]::Yellow   }
        }
        [string]$stringToShow   =   'Base: {0:yyyy.MM.dd}; Current: {1:yyyy.MM.dd}; Is older: {2}; Path: {3}' -f $dateToCompare,$dateOfItem,$isOlderThan,$Path.FullName
        Write-Host -ForegroundColor $fgColor -Object $stringToShow
        #>
        if  (-not   $isOlderThan)   {   return  }
        return  $Path
    }
}