protected function buildSearchParameter(array $searchFilters)
    {
        $search = [];
        foreach ($searchFilters as $filter) {
            $parts = explode(' ', trim($filter), 2);

            if (empty($parts) || 2 !== \count($parts)) {
                continue;
            }
            $search[$parts[0]] = $parts[1];
        }

        return $search;
    }