Add "select dropdown" item to the main admin navigation, possible?

[Federico]

Looking for suggestions on how to insert a dropdown menu next to the admin navigation (Pages, Setup, Modules, Access, DropdownMenu), with uikit3 will be something like this one

  

I see how to hook and modify the module page title and the breadcrumb

$this->addHookBefore('Process::execute', function (HookEvent $event) {
    $process = $event->object;
    $event->wire('breadcrumbs')->removeAll();
    $event->wire('processHeadline', 'customTitle');
    $event->wire('processBrowserTitle', 'customTitle');
});

but not sure how to hook the main navigation to add new item. I see this executeNavJson in the Hooks methods, but doesn't return enything

$this->addHookBefore('Process::executeNavJSON', function (HookEvent $event) {
    $process = $event->object; //  @var Process $process
    bd($process); // Tracy is not even thrown 
});

Did I miss any docs for this?

[Federico]

well after many attempts, I've found that this working solution

doesn't work for the Uikit Admin theme, as the latter has no helper file (yet, whereas all others admin theme have). pity!

[Federico]

At the moment the only way to achieve this in the Uikit Admin Theme is via javascript route, as described by Lahijani in this thread