Widget/Widget.php
public function clearWidgetCache()
    {
        // Get Widgets
        $widgets = $this->getWidgets(false);
        $userId = $this->token->getToken()->getUser()->getId();

        // Clear Cache
        foreach ($widgets as $widget) {
            $this->cache->deleteItem($widget->getId().$userId);
        }
    }
public function clearWidgetCache()
    {
        // Get Widgets
        $widgets = $this->getWidgets(false);
        $userId = $this->token->getToken()->getUser()->getId();

        // Clear Cache
        foreach ($widgets as $widget) {
            $this->cache->deleteItem($widget->getId().$userId);
        }
    }
Clear current user widget cache.

@throws \Psr\Cache\InvalidArgumentException