protected function getValues(array $labels)
    {
        if (in_array(strtolower($this->type), $this->specialDatasets)) {
            return Collection::make($this->values)
                ->map(function ($value, $key) use ($labels) {
                    return [
                        'name'  => $labels[$key],
                        'value' => $value,
                    ];
                })->toArray();
        }

        return $this->values;
    }