bus_match_find     81 src/libsystemd/sd-bus/bus-match.h int bus_match_find(struct bus_match_node *root, struct bus_match_component *components, unsigned n_components, sd_bus_message_handler_t callback, void *userdata, struct match_callback **ret);
bus_match_find   2891 src/libsystemd/sd-bus/sd-bus.c         r = bus_match_find(&bus->match_callbacks, components, n_components, NULL, NULL, &c);