Triggering a build by SCM change works fine with load rules + branches + label,
but Jenkins detects changes only for well-known labels (MY_LABEL_1).
But sometimes it would be very helpful to have wildcards available for labels,
e.g. if you know the "basename" of a new label, but not its revision (MY_LABEL_*).
Example: I want to trigger a build only if there's a new element version
available in main branch tagged with a label: <load rule>@@/<branch>/MY_LABEL_*