Firebase Docs Reference GoogleMobileAds Framework Reference GADExtras @interface GADExtras : NSObject <GADAdNetworkExtras> Ad network extras sent to Google networks. additionalParameters Additional parameters to be sent to Google networks. Declaration Objective-C @property (readwrite, copy, nonatomic, nullable) NSDictionary *additionalParameters; Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated May 21, 2018.