+extern void connman_dbus_property_append_variant(DBusMessageIter *property,
+ const char *key, int type, void *val);
+
+extern void connman_dbus_dict_append_array(DBusMessageIter *dict,
+ const char *key, int type, void *val, int len);
+extern void connman_dbus_dict_append_variant(DBusMessageIter *dict,
+ const char *key, int type, void *val);
+
+extern char *connman_dbus_encode_string(const char *value);