'record', 'Vhost' => 'vhost', 'CallbackDetailList' => [], ]; $response = $client->updateCallback(['json' => $body]); echo $response; echo '
'; $body = [ 'MessageType' => 'record', 'Domain' => 'domain', 'App' => 'app', ]; $response = $client->describeCallback(['json' => $body]); echo $response; echo '
'; $body = [ 'MessageType' => 'record', 'Vhost' => 'vhost1', ]; $response = $client->deleteCallback(['json' => $body]); echo $response; echo '
';