Updating site pages content - Hard or easy?

[PascalKremp]

    public function getPage($objectId)
    {
        try {
            return $this->client->cms()->pages()->sitePagesApi()->getById($objectId);
        } catch (ApiException $e) {
            echo 'Exception when calling site_pages_api->get_by_id: ', $e->getMessage();
        }
    }

    public function updatePage($objectId, Page $page)
    {
        try {
            return $this->client->cms()->pages()->sitePagesApi()->update($objectId, $page);
        } catch (ApiException $e) {
            return $e->getResponseBody();
            //            echo 'Exception when calling site_pages_api->update: ', $e;
        }
    }

    $hubSpot = hubSpot();

    $objectId = 1234;

    $page = $hubSpot->getPage($objectId);
    $page->setSlug('test-123');
    $page->setHtmlTitle('test-123');

    return $hubSpot->updatePage($objectId, $page);

Maybe I am having a wrong idea on how to update a page. But doing this returns couple of errors.

One error is for example that translations key has empty array. If I unset the translations key value pair from $page it works. But I need to remove some more to make it working.

Some best practices on how to use API for this case (updating page content) would be appreciated, espacially for layoutSections.

$page->update() would be nice after making some changes with setters. Maybe this is already included and I don't know about it?