getSuperClass example

break;
            case "ChainExpression":
            case "ExpressionStatement":
                $code .= $this->renderNode($node->getExpression());
            break;
            case "ClassExpression":
            case "ClassDeclaration":
                $code .= "class";
                if ($id = $node->getId()) {
                    $code .= " " . $this->renderNode($id);
                }
                if ($superClass = $node->getSuperClass()) {
                    $code .= " extends " . $this->renderNode($superClass);
                }
                $code .= $this->renderStatementBlock(
                    $node, $node->getBody(), true
                );
            break;
            case "ConditionalExpression":
                $code .= $this->renderNode($node->getTest()) .
                         $this->renderOpts->sao .
                         "?" .
                         $this->renderOpts->sao .