/**
* Call-back function for sorting states by their priority. Lower sort index => lower priority.
* @param WorkflowState $a
* @param WorkflowState $b
*/
private static function sortStates(WorkflowState $a, WorkflowState $b)
{
if ($a->getSortIndex() == $b->getSortIndex()) {
return 0;
}
return $a->getSortIndex() < $b->getSortIndex() ? -1 : 1;
}
