public function columns()
    {
        $this->hook->filter(
            "manage_edit-{$this->posttype->getModel()->getSlug()}_columns",
            [$this->posttype->getColumns(), 'setNames']
        )->dispatch();

        $this->hook->action(
            "manage_{$this->posttype->getModel()->getSlug()}_posts_custom_column",
            [$this->posttype->getColumns(), 'manageContent']
        )->dispatch();
    }