gets registered device count . concode_field_sep Logger LOG concode_field_sep List<Device> getAllDevices concode_elem_sep List<Device> findDevicesByGcmGroupId concode_elem_sep Device findDeviceByGcmId concode_elem_sep void unregister concode_elem_sep void updateRegistration concode_elem_sep void register
int function ( ) { return ofy ( ) . load ( ) . type ( Device . class ) . count ( ) ; }