如何在powershell中按扩展名列表分隔整个文件夹内容

$folderPath = "C:\Folder"
$folderContents = Get-ChildItem -Path $folderPath -Recurse

$extensionFiles = @{}

foreach ($file in $folderContents) {
    if (-not $file.PSIsContainer) {
        $extension = $file.Extension
        $extensionFiles[$extension] += @($file)
    }
}

foreach ($extension in $extensionFiles.Keys) {
    Write-Host "Extension: $extension"
    foreach ($file in $extensionFiles[$extension]) {
        Write-Host " - $($file.Name)"
    }
    Write-Host ""
}