code: private void setupProcessingItemInstances() {
  		for (IProcessingItem pi:this.getProcessingItems()) {
  			if (pi instanceof ThreadsProcessingItem) {
  				ThreadsProcessingItem tpi = (ThreadsProcessingItem) pi;
  				tpi.setupInstances();
  			}
  		}
  	}
docs: /*
  Tell all the ThreadsProcessingItems to create & init their
  replicas (ThreadsProcessingItemInstance)