document setAppends

Author: taylorotwell

eloquent-collections.md

@@ -81,6 +81,7 @@ In addition, the `Illuminate\Database\Eloquent\Collection` class provides a supe
 [makeHidden](#method-makeHidden)
 [only](#method-only)
 [partition](#method-partition)
+[setAppends](#method-setAppends)
 [setVisible](#method-setVisible)
 [setHidden](#method-setHidden)
 [toQuery](#method-toquery)
@@ -251,6 +252,15 @@ dump($partition[0]::class); // Illuminate\Database\Eloquent\Collection
 dump($partition[1]::class); // Illuminate\Database\Eloquent\Collection
 ```
 
+<a name="method-setAppends"></a>
+#### `setAppends($attributes)` {.collection-method}
+
+The `setAppends` method temporarily overrides all of the [appended attributes](/docs/{{version}}/eloquent-serialization#appending-values-to-json) on each model in the collection:
+
+```php
+$users = $users->setAppends(['is_admin']);
+```
+
 <a name="method-setVisible"></a>
 #### `setVisible($attributes)` {.collection-method}