+int sd_bus_reply_method_errorf(sd_bus *bus, sd_bus_message *call, const char *name, const char *format, ...);
+
+int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...);
+
+int sd_bus_emit_properties_changed_strv(sd_bus *bus, const char *path, const char *interface, char **names);
+int sd_bus_emit_properties_changed(sd_bus *bus, const char *path, const char *interface, const char *name, ...);
+
+int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces); /* MISSING */
+int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...); /* MISSING */
+int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces); /* MISSING */
+int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...); /* MISSING */