public function totals()
    {
        $totals = Collection::make();

        foreach (Arr::except($this->footer(), 'all') as $level => $count) {
            $totals->put($level, [
                'label'     => $this->translate("levels.$level"),
                'value'     => $count,
                'color'     => $this->color($level),
                'highlight' => $this->color($level),
            ]);
        }

        return $totals;
    }