To start threads:
Optionally, configure a run interval by calling the setRunInterval method, specifying the group name.
If necessary, create proxies for the components that will run in the thread group. For stateless or shared-instance components, you can use one proxy instance to run the component on multiple threads. For stateful components, create a proxy for each component instance and initialize the instance state as necessary.
Start the desired number of threads by calling the start method once per thread. In each call, specify the group name and pass a proxy for the component that is to run in the thread.
If you have set a thread count, and try to start more threads than the thread count, the behavior depends on the run interval. If the run interval is -1, all threads are started and run once. If the run interval is 0 or positive, the start method does not create additional threads after the count is reached.
