code: private void mapControllerAndEntityClasses(
  			BeanDefinitionRegistry reg,
  			Map<String, Class<?>> controllerToEntityMapping,
  			Map<Class<?>, String> entityToRepositoryMapping,
  			Map<Class<?>, Set<String>> entityToControllerMappings) throws ClassNotFoundException {
  
  		// Loop thru the bean registry
  		//
  		for(String bfName : reg.getBeanDefinitionNames()) {
  
  			BeanDefinition bf = reg.getBeanDefinition(bfName);
  
  			if (bf.isAbstract()) {
  				logger.debug("Skipping abstract bean " + bfName);
  				continue;
  			}
  
  			Class<?> clazz = getClassFromBeanDefinition(bf, reg);
  
  			if (clazz == null) {
  				logger.debug("Unable to resolve class for bean " + bfName);
  				continue;
  			}
  
  			// If it's a StatefulController, map controller to the entity and the entity to the controller
  			//
  			if (ReflectionUtils.isAnnotationPresent(clazz, StatefulController.class)) {
  				mapEntityWithController(controllerToEntityMapping, entityToControllerMappings, bfName, clazz);
  			}
  
  			// Else, if the Bean is a Repository, then map the
  			// Entity associated with the Repo to the PersistenceSupport object
  			//
  			else if (RepositoryFactoryBeanSupport.class.isAssignableFrom(clazz)) {
  				mapEntityToRepository(entityToRepositoryMapping, bfName, bf);
  			}
  		}
  	}
docs: Iterate thru all beans and fetch the StatefulControllers
  
  @param reg
  @return
  @throws ClassNotFoundException