src/Lib/Document/CallTreeToHTML.php
function getDom($node)
    {
        $this->makeNode($node);
        $this->dom->appendChild($this->element);
        return $this->dom;
    }
function getDom($node)
    {
        $this->makeNode($node);
        $this->dom->appendChild($this->element);
        return $this->dom;
    }
返回DOM

@param $node
@return DOMDocument