Provides access to shopping ad group-level targeting criteria (currently just audiences).

For instance, to select all audiences targeted by shopping ad groups you
might use:

```
var shoppingAudienceSelector = AdsApp.shoppingAdGroupTargeting()
 .audiences()
 .withCondition("metrics.impressions > 100")
 .forDateRange("LAST_MONTH")
 .orderBy("metrics.clicks DESC");

var shoppingAudienceIterator = shoppingAudienceSelector.get();
while (shoppingAudienceIterator.hasNext()) {
  var shoppingAudience = shoppingAudienceIterator.next();
}
```

### Methods:

| Member | Type | Description |
|---|---|---|
| [audiences()](https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_accountshoppingadgrouptargeting#audiences) | `https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_shoppingadgroupaudienceselector` | Specializes this selector to return [ShoppingAdGroupAudience](https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_shoppingadgroupaudience) criteria. |

## `audiences()`

Specializes this selector to return [ShoppingAdGroupAudience](https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_shoppingadgroupaudience) criteria.

### Return values:

| Type | Description |
|---|---|
| `https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_shoppingadgroupaudienceselector` | A selector for [ShoppingAdGroupAudience](https://developers.google.com/google-ads/scripts/docs/reference/adsapp/adsapp_shoppingadgroupaudience) criteria. |