public ApplicationKey getSelectedAppKey() {
        if (selectedAppKey == null && !meshNetwork.getAppKeys().isEmpty())
            selectedAppKey = meshNetwork.getAppKeys().get(0);
        return selectedAppKey;
    }
Return the selected app key to be added during the provisioning process.

@return app key
app/src/main/java/no/nordicsemi/android/nrfmesh/viewmodels/MeshNetworkLiveData.java