public static function findMultipleByUuidsAndExtensions($arrUuids, $arrExtensions, array $arrOptions=array())
	{
		if (empty($arrUuids) || empty($arrExtensions) || !\is_array($arrUuids) || !\is_array($arrExtensions))
		{
			return null;
		}

		foreach ($arrExtensions as $k=>$v)
		{
			if (!preg_match('/^[a-z0-9]{2,5}$/i', $v))
			{
				unset($arrExtensions[$k]);
			}
		}

		$t = static::$strTable;

		foreach ($arrUuids as $k=>$v)
		{
			// Convert UUIDs to binary
			if (Validator::isStringUuid($v))
			{
				$v = StringUtil::uuidToBin($v);
			}

			$arrUuids[$k] = "UNHEX('" . bin2hex($v) . "')";
		}

		if (!isset($arrOptions['order']))
		{
			$arrOptions['order'] = "$t.uuid!=" . implode(", $t.uuid!=", $arrUuids);
		}

		return static::findBy(array("$t.uuid IN(" . implode(",", $arrUuids) . ") AND $t.extension IN('" . implode("','", $arrExtensions) . "')"), null, $arrOptions);
	}