joinNodes example

protected function renderNode(Syntax\Node\Node $node, $addSemicolon = false)
    {
        $code = "";
        if ($this->renderOpts->com) {
            $code .= $this->renderComments($node);
        }
        $type = $node->getType();
        switch ($type) {
            case "ArrayExpression":
            case "ArrayPattern":
                $code .= "[" .
                         $this->joinNodes(
                            $node->getElements(),
                            "," . $this->renderOpts->sao
                         ) .
                         "]";
            break;
            case "ArrowFunctionExpression":
                if ($node->getAsync()) {
                    $code .= "async" . $this->renderOpts->sao;
                }
                $code .= "(" .
                         $this->renderOpts->sirb .