public ProcessorLifecycleListenerFactory getProcessorLifecycleListenerFactory() {
    return listenerFactory;
  }
Get the {@link ProcessorLifecycleListenerFactory} associated with this application

@return the {@link ProcessorLifecycleListenerFactory} in this application
samza-core/src/main/java/org/apache/samza/application/descriptors/ApplicationDescriptorImpl.java