在Sharepoint中循环文件夹的powershell脚本的小问题

# 导入Sharepoint PowerShell模块
Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue
 
# 设置Sharepoint网站URL和列表名称
$webUrl = "https://sharepoint.example.com/sites/site"
$listName = "Documents"

# 获取Sharepoint网站对象和列表对象
$web = Get-SPWeb $webUrl
$list = $web.Lists[$listName]
 
# 定义递归函数用于处理文件夹和文件
function ProcessFolder($folder)
{
    Write-Host "正在处理文件夹:" $folder.Name
  
    # 循环遍历文件夹中的文件和子文件夹
    foreach ($file in $folder.Files)
    {
        # 在这里可以对文件进行处理，例如打印文件名
        Write-Host "文件名: " $file.Name
    }

    foreach ($subFolder in $folder.SubFolders)
    {
        # 递归处理子文件夹
        ProcessFolder($subFolder)
    }
}
 
# 调用递归函数处理根文件夹
ProcessFolder($list.RootFolder)
 
# 释放资源
$web.Dispose()