int device_handler_get_device_count(const struct device_handler *handler);
const struct discover_device *device_handler_get_device(
const struct device_handler *handler, unsigned int index);
int device_handler_get_device_count(const struct device_handler *handler);
const struct discover_device *device_handler_get_device(
const struct device_handler *handler, unsigned int index);
struct discover_device *discover_device_create(struct device_handler *handler,
const char *uuid, const char *id);
struct discover_device *discover_device_create(struct device_handler *handler,
const char *uuid, const char *id);