id_first          918 lib/pacemaker/pcmk_sched_ordering.c     const char *id_first = NULL;
id_first          939 lib/pacemaker/pcmk_sched_ordering.c     id_first = crm_element_value(xml_obj, PCMK_XA_FIRST);
id_first          941 lib/pacemaker/pcmk_sched_ordering.c     if ((id_first == NULL) || (id_then == NULL)) {
id_first          945 lib/pacemaker/pcmk_sched_ordering.c     if (!pcmk__valid_resource_or_tag(scheduler, id_first, &rsc_first,
id_first          949 lib/pacemaker/pcmk_sched_ordering.c                          pcmk__xe_id(xml_obj), id_first);