code: public function uploadFile($row, $href, $label, $title, $icon, $attributes)
  	{
  		if (!$GLOBALS['TL_DCA']['tl_files']['config']['closed'] && !$GLOBALS['TL_DCA']['tl_files']['config']['notCreatable'] && Contao\Input::get('act') != 'select' && isset($row['type']) && $row['type'] == 'folder')
  		{
  			return '<a href="'.$this->addToUrl($href.'&amp;pid='.$row['id']).'" title="'.Contao\StringUtil::specialchars($title).'" '.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</a> ';
  		}
  
  		return ' ';
  	}
docs: Return the upload file button
  
  @param array  $row
  @param string $href
  @param string $label
  @param string $title
  @param string $icon
  @param string $attributes
  
  @return string