Collection::translateValueFromOutside

public function translateValueFromOutside($value, $key, $item)
{
	if(UtilType::isIterable($value))
	{
		// drop broken
		foreach($value as $k => $v)
		{
			if((string) $v == '')
			{
				unset($value[$k]);
			}
		}
	}

	return $this->createValue($value, $key, $item);
}