Hi guys I think this line of doc should be: newMutexBased returns a new **_mutex_** based limiter. <img width="627" alt="Screen Shot 1402-01-12 at 12 09 28" src="https://user-images.githubusercontent.com/45311375/229276072-7ba86eea-d9af-4bf8-a6eb-16cc44a735f5.png">