public function pop(){
		if(count($this->stack) > $this->depth) array_pop($this->stack);
		if($this->depth==0) throw new \Exception('Can\' pop nothing');
		$this->depth--;
		
		if($this->current != null){
			$this->current	= $this->current->getParent();
			$this->loaded	= $this->current != null;
		}
	}