类型错误：在对象 AdsApp 中找不到函数 adAsset

如何解决类型错误：在对象 AdsApp 中找不到函数 adAsset

我试图使用 Google 开发文档“ var assetIterator = AdsApp.adAsset().assets()”中的这一行从 Google Ads 中获取 AdAssets，并且似乎此错误一直出现“TypeError：找不到函数 adAsset in对象 AdsApp。”文档在这里：https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_assetselector?skip_cache=false#get_0

function main() {
 
  //Step 1: Connect Google Ads to the Google Sheet
  var spreadsheetUrl = 'https://docs.google.com/spreadsheets/d/xxxxx';
  var spreadsheet = SpreadsheetApp.openByUrl(spreadsheetUrl);
  var ss = spreadsheet.getSheetByName('Sheet1');
  ss.clear();
 
  //Step 2: Create an array to store the data
  var sheetarray = [['Campaign','Impressions','Clicks','Cost','Conversions']];
 
  
    //Step 3: Collect the data you need from Google Ads
 var assetIterator = AdsApp.adAsset().assets()
   .withCondition("Type = IMAGE")
   .get();
  
  
  //Step 4: Add the data you got from Google Ads into the array
  while (assetIterator.hasNext()) {
    var campaign = assetIterator.next();
    sheetarray.push([
        campaign.getName(),campaign.getStatsFor("THIS_MONTH").getImpressions(),campaign.getStatsFor("THIS_MONTH").getClicks(),campaign.getStatsFor("THIS_MONTH").getCost(),campaign.getStatsFor("THIS_MONTH").getConversions()
      ]);
  }
  
  if (sheetarray.length > 0) {
     
    // Step 6: Send the array's data to the Google Sheet
    ss.getRange(1,1,sheetarray.length,sheetarray[0].length).setValues(sheetarray);
    
    


  }
   
}