in src/main/java/com/googlesource/gerrit/plugins/refprotection/RefUpdateListener.java [134:145]
private boolean isRefDeleted(RefUpdatedEvent event) {
RefUpdateAttribute refUpdate = event.refUpdate.get();
if (refUpdate.newRev.equals(ObjectId.zeroId().getName())) {
log.info(
"Ref Deleted: project [{}] refname [{}] old object id [{}]",
event.getProjectNameKey(),
event.getRefName(),
refUpdate.oldRev);
return true;
}
return false;
}