code: public function deleteFile($row, $href, $label, $title, $icon, $attributes)
  	{
  		$rootDir = Contao\System::getContainer()->getParameter('kernel.project_dir');
  		$path = $rootDir . '/' . urldecode($row['id']);
  
  		if (!is_dir($path))
  		{
  			return ($this->User->hasAccess('f3', 'fop') || $this->User->hasAccess('f4', 'fop')) ? '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.Contao\StringUtil::specialchars($title).'"'.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</a> ' : Contao\Image::getHtml(preg_replace('/\.svg$/i', '_.svg', $icon)).' ';
  		}
  
  		$finder = Symfony\Component\Finder\Finder::create()->in($path);
  
  		if ($finder->count() > 0)
  		{
  			return $this->User->hasAccess('f4', 'fop') ? '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.Contao\StringUtil::specialchars($title).'"'.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</a> ' : Contao\Image::getHtml(preg_replace('/\.svg$/i', '_.svg', $icon)).' ';
  		}
  
  		return $this->User->hasAccess('f3', 'fop') ? '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.Contao\StringUtil::specialchars($title).'"'.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</a> ' : Contao\Image::getHtml(preg_replace('/\.svg$/i', '_.svg', $icon)).' ';
  	}
docs: Return the delete file button
  
  @param array  $row
  @param string $href
  @param string $label
  @param string $title
  @param string $icon
  @param string $attributes
  
  @return string