[TYPO3-mvc] Typo3 extbase FAL file download

[Ganapati Bhat]

Using Extbase plugin, I wanted to show file download link.
I am using typo3 v6.1 FAL file structure.
But I am unable to get original file download link.

In file ext_tables.sql

CREATE TABLE tx_myext_domain_model_test (
        # ...
        files varchar(255) DEFAULT '' NOT NULL,
        # ...
);

In file Configuration/TCA/Test.php

$TCA['tx_myext_domain_model_test'] = array(
        // ...
        'files' => array(
                'exclude' => 1,
                'label' => 'Files',
                'config' =>
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::getFileFieldTCAConfig('files',
array(
                        'appearance' => array(
                                'createNewRelationLinkTitle' =>
'LLL:EXT:cms/locallang_ttc.xlf:images.addFileReference'
                        ),
                ), $GLOBALS['TYPO3_CONF_VARS']['GFX']['imagefile_ext']),
        ),
        // ...
);

In file Classes/Domain/Model/Test.php

class Test extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity {
        // ...
/**
         * Files
         * @var
\TYPO3\CMS\Extbase\Persistence\ObjectStorage<\TYPO3\CMS\Extbase\Domain\Model\FileReference>
         */
        protected $files;
 /**
         * Returns the files
         *
         * @return
\TYPO3\CMS\Extbase\Persistence\ObjectStorage<\TYPO3\CMS\Extbase\Domain\Model\FileReference>
$files
         */
        public function getFiles() {
                return $this->files;
        }
}

In file Classes/Controller/TestController.php

class TestController extends
\TYPO3\CMS\Extbase\Mvc\Controller\ActionController {
        // ..
        public function listAction() {
                $tests = $this->testRepository->findAll();
                $this->view->assign('tests', $tests);
        }
        // ..
}

In file Resources/Private/Templates/Test/List.html

<f:for each="{tests}" as="test" iteration="itemIterator">
<f:debug title="Debug of test">{test.files}</f:debug>
<f:for each="{test.files}" as="file">
<a href="{f:uri.image(src:file.uid,treatIdAsReference:1)}">
<f:image src="{file.uid}" alt="" width='101' height="67"
treatIdAsReference="1"/>
</a>
<p>{file.originalResource.originalFile.title}</p>
</f:for>

Here If in debug "originalResource" is NULL.
Anybody know how to get original file link here ?

Thank you.