private void fireTagChangedNotification(ProgramEvent eventType, FunctionTag tag,
			String oldValue, String newValue) {
		program.tagChanged(tag, eventType, oldValue, newValue);
	}
Sends a notification when a tag has been changed (edited or deleted).

@param type {@link ChangeManager} change type
@param tag the tag that was changed
@param oldValue the old value
@param newValue the new value
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/function/FunctionTagManagerDB.java