code: @Reference(policy = ReferencePolicy.DYNAMIC, cardinality = ReferenceCardinality.OPTIONAL, target = "(id=unbound)")
      protected void setLongRunningPolicy(ConcurrencyPolicy svc) {
          longRunningPolicyExecutorRef.set(svc.getExecutor());
      }
docs: Declarative Services method for setting the long running concurrency policy.
  
  @param svc the service