public function exec(Request $request, array $params)
{
$response = ['took' => 0, 'timed_out' => false, '_shards' => ['total' => 0, 'successful' => 0, 'failed' => 0], 'hits' => ['total' => 0, 'max_score' => null, 'hits' => []], 'params' => $params];
return new Response(JSON::stringify($response));
}