RoundRobinGroup Class
A router group that uses round-robin to select a routee. For concurrent calls,
round robin is just a best effort.
The configuration parameter trumps the constructor arguments. This means that
if you provide `paths` during instantiation they will be ignored if
the router is defined in the configuration file for the actor being used.
Namespace:
Akka.RoutingAssembly: Akka (in Akka.dll)
Inheritance Hierarchy
Akka.Routing..::..RouterConfig
Akka.Routing..::..Group
Akka.Routing..::..RoundRobinGroup