public void setGCM(AndroidPushNotificationTemplate gCM) {
        this.gCM = gCM;
    }
<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).
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/PushNotificationTemplateResponse.java