+AvahiStringList *avahi_string_list_add(AvahiStringList *l, const char *text);
+
+/** Append a new NUL terminated formatted string to the specified string list */
+AvahiStringList *avahi_string_list_add_printf(AvahiStringList *l, const char *format, ...) AVAHI_GCC_PRINTF_ATTR23;
+
+/** Append a new NUL terminated formatted string to the specified string list */
+AvahiStringList *avahi_string_list_add_vprintf(AvahiStringList *l, const char *format, va_list va);