Magento 2: How get setted URL

Question

I have question, for example, we have some redirect:

class toto extends \Magento\Framework\App\Action\Action
{
    protected $_resultPageFactory;
    protected $_resulFactory;


    public function __construct(
            \Magento\Framework\App\Action\Context $context,
            \Magento\Framework\View\Result\PageFactory $resultPageFactory,
            \Magento\Framework\Controller\ResultFactory $resulFactory,
            )
    {
        parent::__construct($context);
        $this->_resultPageFactory = $resultPageFactory;
        $this->_resultFactory = $resulFactory;
    }

    public function execute()
    {
    $resultRedirect = $this->_resultFactory->create(\Magento\Framework\Controller\ResultFactory::TYPE_REDIRECT);
    $resultRedirect->setPath('homepage.html');
    return $resultRedirect;
    }

And question is:"how in this controller i can get this redirect url. For example i want add new checking, if redirect url page equal 'homepage':

public function execute()
{
    $resultRedirect = $this->_resultFactory->create(\Magento\Framework\Controller\ResultFactory::TYPE_REDIRECT);
    $resultRedirect->setPath('homepage.html');

    if('get redirect url' == 'homepage')
    {
        //some code
        $resultRedirect->setPath('bar.html');
    }
    return $resultRedirect;
}

So how can i get url after setPath method?