static void svc_call(struct afb_svc *svc, const char *api, const char *verb, struct json_object *args,
void (*callback)(void*, int, struct json_object*), void *closure);
static void svc_call(struct afb_svc *svc, const char *api, const char *verb, struct json_object *args,
void (*callback)(void*, int, struct json_object*), void *closure);