+void json_to_ds(const struct json *, int flags, struct ds *);
+
+size_t json_serialized_length(const struct json *);
+\f
+/* JSON string formatting operations. */
+
+bool json_string_unescape(const char *in, size_t in_len, char **outp);
+
+#ifdef __cplusplus
+}
+#endif