_CMailBoxDBRes::Fetch

function Fetch()
{
	if($res = parent::Fetch())
	{
		if(!BitrixMainLoader::includeModule('mail'))
		{
			return false;
		}

		$entity = BitrixMailMailboxTable::getEntity();

		foreach ($res as $alias => $value)
		{
			if (!$entity->hasField($alias))
			{
				continue;
			}

			foreach ($entity->getField($alias)->getFetchDataModifiers() as $modifier)
			{
				$res[$alias] = call_user_func_array($modifier, array($res[$alias], $this, $res, $alias));
			}
		}
	}
	return $res;
}