Update Add-AppxPackage.md

Author: RDMacLachlan

docset/winserver2022-ps/appx/Add-AppxPackage.md

@@ -119,6 +119,13 @@ Add-AppxPackage -Path "C:\Users\user1\Desktop\MyApp.msixbundle" -RequiredContent
 
 This command adds an app package but only installs the required section of a streaming app. Calling this command again without the RequiredContentGroupOnly flag proceeds to install the rest of the application in the order defined by the AppxContentGroupMap.xml
 
+### Example 6: Install an app using the App Installer file
+```powershell
+Add-AppxPackage -AppInstallerFile "C:\Users\user1\Desktop\MyApp.appinstaller"
+```
+
+This command adds an app package as outlined in the App Installer file. With any / all update settings specified within the App Installer file.
+
 ## PARAMETERS
 
 ### -AllowUnsigned