Fragment::walkDepth

public function walkDepth($cb)
{
	$result = new Result();
	if(!is_callable($cb))
	{
		return $result;
	}

	$data = array();
	$met = array();
	$index = $this->getIndex();
	$this->walkDepthStep(0, 0, $cb, $index, $result, $data, $met);

	$result->setData($data);

	return $result;
}