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If you need step-by-step instructions for connecting your Android application to this backend module, see "App Engine Backend with Google Cloud Messaging" template documentation.
For more information about Google App Engine for Java, check out the App Engine documentation.
To learn more about Google Cloud Endpoints, see Cloud Endpoints documentation.
Similarly, for more information about Google Cloud Messaging, see Cloud Messaging documentation.
If you'd like to access your generated Google Cloud Endpoints APIs directly, see the Cloud Endpoints API Explorer.