Google YouTube服务播放列表项目返回不存在的已取消的On Air Hangout项目

Question

我使用标准/示例Google API代码列出来自频道的YouTube视频：

$channelsResponse = $youtube->channels->listChannels("contentDetails", array(
  "mine" => "true",
));

foreach ($channelsResponse["items"] as $channel) {

    $uploadsListId = $channel["contentDetails"]["relatedPlaylists"]["uploads"];

    $playlistItemsResponse = $youtube->playlistItems->listPlaylistItems("snippet", array(
        "playlistId" => $uploadsListId,
        "maxResults" => 50
    ));

    echo "<h3>Videos in list $uploadsListId</h3><ul>";

    foreach ($playlistItemsResponse["items"] as $playlistItem) {

        echo $playlistItem["snippet"]["title"] . " (" . $playlistItem["snippet"]["resourceId"]["videoId"] . ")<br>";
        echo "<img src=" . $playlistItem["snippet"]["thumbnails"]["default"]["url"] . "><br>";
        echo "<br><br>";

    }

    echo "</ul>";
}

然而，它所带回的列表中充满了TONS of On Air Hangout事件，我已经发起了这一事件，但从未点击过“开始广播”按钮，这会导致它们被保存/存档到我的YouTube帐户中。这几乎就像是，在开始之前取消“On Air”环聊广播会创建这些ghost playlistItems ...如何检测它们（并从显示的API调用返回的列表中过滤它们？）