+bool object_path_is_valid(const char *p);
+char *object_path_startswith(const char *a, const char *b);
+
+bool namespace_complex_pattern(const char *pattern, const char *value);
+bool path_complex_pattern(const char *pattern, const char *value);
+
+bool namespace_simple_pattern(const char *pattern, const char *value);
+bool path_simple_pattern(const char *pattern, const char *value);
+
+int bus_message_type_from_string(const char *s, uint8_t *u);
+const char *bus_message_type_to_string(uint8_t u);