PowerShell函数返回带有Extra＆＃x27; Counter＆＃x27;的数组。值

Question

＃inside函数ArrayList有51个项目，但是该函数返回102个项目ArrayList ＃0到＃51是INT值0到51，＃51至＃101是预期的JSON对象吗？

function Get-RedditTopics () {
    
    $arrayList = New-Object -TypeName "System.Collections.ArrayList"
    $url = 'https://www.reddit.com/r/worldnews/.json'
    $pages = 2
    
    $after = ""
    for ($i = 0; $i -lt $pages; $i++) {
    
        if ($i -gt 0) {
            $url = $url + "?after=$after"
        }
    
        $result = Invoke-RestMethod $url
    
        foreach ($item in $result.data.children) {
            $arrayList.Add($item.data)
        }
    
        $after = $result.data.after
    }
    return $arrayList #51 items, ok!
}

$redditTopics = Get-RedditTopics #function returns $arrayList with 102 items
write-host "redditTopics count: $($redditTopics.Count)"