code: public function getList()
  	{
  		$this->getResponse()
  			->setStatusCode(Response::STATUS_CODE_200);
  		
  		$params = array_merge_recursive(
  			$this->params()->fromQuery(), 
  			$this->params()->fromRoute()
  		);
  		$data = $this->getModel()->getList($params, $this->getServiceLocator());
  		
  		return new JsonModel($data);
  	}
docs: Respond to HTTP GET method without :id
  @see \Zend\Mvc\Controller\AbstractRestfulController::getList()