protected function addChild($name, $cacheId)
    {
        $child = $this->getExtensions()->createElement($this, $name);
        $this->dropCachedProperty($cacheId);

        return $child;
    }
protected function addChild($name, $cacheId)
    {
        $child = $this->getExtensions()->createElement($this, $name);
        $this->dropCachedProperty($cacheId);

        return $child;
    }
protected function addChild ( $ name , $ cacheId ) { $ child = $ this -> getExtensions ( ) -> createElement ( $ this , $ name ) ; $ this -> dropCachedProperty ( $ cacheId ) ; return $ child ; }
Add new child element

@param $name
@param $cacheId

@return Element|null

@since 1.0
Add new child element