public PushNotificationTemplateResponse withGCM(AndroidPushNotificationTemplate gCM) {
        setGCM(gCM);
        return this;
    }
<p>
The message template that's used for the GCM channel, which is used to send notifications through the Firebase
Cloud Messaging (FCM), formerly Google Cloud Messaging (GCM), service. This message template overrides the
default template for push notification channels (DefaultPushNotificationTemplate).
</p>

@param gCM
       The message template that's used for the GCM channel, which is used to send notifications through the
       Firebase Cloud Messaging (FCM), formerly Google Cloud Messaging (GCM), service. This message template
       overrides the default template for push notification channels (DefaultPushNotificationTemplate).
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/PushNotificationTemplateResponse.java