public function getParams()
    {
        $filters = array_filter($this->filters, function ($value) {
            return $value !== null;
        });

        $filters = array_map(function ($value) {
            return is_array($value) ? ['value' => $value, 'operator' => 'IN'] : $value;
        }, $filters);

        return count($filters) ? ['filter' => $filters] : [];
    }