Spatie\Php7to5\NodeVisitors\NullCoalesceReplacer::leaveNode PHP Метод

    public function leaveNode(Node $node)
    {
        if (!$node instanceof Coalesce) {
            return;
        }
        $issetCall = new Node\Expr\FuncCall(new Node\Name('isset'), [$node->left]);
        return new Node\Expr\Ternary($issetCall, $node->left, $node->right);
    }