private Semaphore summonGuardAndAcquire(final InstanceIdentifier<FlowCapableNode> flowcapableNodePath) {
final NodeId nodeId = PathUtil.digNodeId(flowcapableNodePath);
final Semaphore guard = Preconditions.checkNotNull(semaphoreKeeper.summonGuard(flowcapableNodePath),
private Semaphore summonGuardAndAcquire(final InstanceIdentifier<FlowCapableNode> flowcapableNodePath) {
final NodeId nodeId = PathUtil.digNodeId(flowcapableNodePath);
final Semaphore guard = Preconditions.checkNotNull(semaphoreKeeper.summonGuard(flowcapableNodePath),