public function blockConstruct()
{
// set the current block suffix for the child elements (0, 1, 3, ...) | this will be removed in Pimcore_View_Helper_Tag::tag
$suffixes = \Zend_Registry::get("pimcore_tag_block_numeration");
$suffixes[] = $this->indices[$this->current]["key"];
\Zend_Registry::set("pimcore_tag_block_numeration", $suffixes);
}