+/*
+ * Retrieve whether all is required from 'req'.
+ */
+static int get_all(afb_req_t req)
+{
+ struct json_object *val;
+
+ /* get the optional language */
+ return json_object_object_get_ex(afb_req_json(req), _all_, &val)
+ && json_object_get_boolean(val);
+}
+