manager_start_unit  375 src/login/logind-user.c                 r = manager_start_unit(u->manager, slice, &error, &job);
manager_start_unit  408 src/login/logind-user.c                 r = manager_start_unit(u->manager, service, &error, &job);
manager_start_unit  180 src/login/logind.h int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job);